Search Results

Search found 7593 results on 304 pages for 'mr 32'.

Page 274/304 | < Previous Page | 270 271 272 273 274 275 276 277 278 279 280 281  | Next Page >

• Email from my new vps is marked as spam

  - by Chriswede

  I got a new vps from x10vps (x10hosting) and set up the domain via cloudflare. This is what the email looks like: Delivered-To: [email protected] Received: by 10.64.19.240 with SMTP id i16csp357708iee; Tue, 9 Oct 2012 01:29:48 -0700 (PDT) Received: by 10.50.57.130 with SMTP id i2mr908846igq.56.1349771387599; Tue, 09 Oct 2012 01:29:47 -0700 (PDT) Return-Path: <[email protected]> Received: from power.SOURCEAPE.COM ([198.91.90.116]) by mx.google.com with ESMTPS id v8si25630942ica.46.2012.10.09.01.29.46 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 09 Oct 2012 01:29:47 -0700 (PDT) Received-SPF: temperror (google.com: error in processing during lookup of [email protected]: DNS timeout) client-ip=198.91.90.116; Authentication-Results: mx.google.com; spf=temperror (google.com: error in processing during lookup of [email protected]: DNS timeout) [email protected] Received: from nk11p03mm-asmtp010.mac.com ([17.158.232.169]:54276) by power.SOURCEAPE.COM with esmtp (Exim 4.80) (envelope-from <[email protected]>) id 1TLVBD-0004Ig-1Y for [email protected]; Tue, 09 Oct 2012 12:28:43 +0400 I then tried to enable SPF and DKIM and got following massage In order to ensure that SPF or DKIM takes effect, you must confirm that this server is an authoritative nameserver for chvw.de. If you need help, contact your hosting provider. Status: Enabled Warning: cPanel is unable to verify that this server is an authoritative nameserver for chvw.de. [?] and the email header now looks like this: Delivered-To: [email protected] Received: by 10.50.183.227 with SMTP id ep3csp14506igc; Tue, 9 Oct 2012 01:55:23 -0700 (PDT) Received: by 10.50.40.133 with SMTP id x5mr992934igk.32.1349772923717; Tue, 09 Oct 2012 01:55:23 -0700 (PDT) Return-Path: <[email protected]> Received: from power.SOURCEAPE.COM ([198.91.90.116]) by mx.google.com with ESMTPS id ng8si25688859icb.42.2012.10.09.01.55.23 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 09 Oct 2012 01:55:23 -0700 (PDT) Received-SPF: temperror (google.com: error in processing during lookup of [email protected]: DNS timeout) client-ip=198.91.90.116; Authentication-Results: mx.google.com; spf=temperror (google.com: error in processing during lookup of [email protected]: DNS timeout) [email protected]; dkim=neutral (bad format) [email protected] DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=chvw.de; s=default; h=Message-ID:Subject:To:From:Date:Content-Transfer-Encoding:Content-Type:MIME-Version; bh=iugsx3Lx0KnqjR7dj3wyQHnJ9pe/z3ntYEVk80k8rx4=; b=IrYsCtHdoPubXVOvLqxd7sLE/TyQTS5P3OrEg5SSUSKnQQcQ/fWWyBrmsrgkFSsw6jCmmRWMDR09vH5bQRpFPMA57B7pf8QRKhwXOWFBV+GnVUqICsfRjnNPvhx/lNp5; Received: from localhost ([127.0.0.1]:46539 helo=direct.chvw.de) by power.SOURCEAPE.COM with esmtpa (Exim 4.80) (envelope-from <[email protected]>) id 1TLVb0-0004dZ-Kd for [email protected]; Tue, 09 Oct 2012 12:55:22 +0400

  Read the article

• Where is my VMware-ws FreeNAS CIFS(ZFS) bottle-neck?

  - by maka

  Background: I'm building a quiet HTPC + NAS that is also supposed to be used for general computer usage. I'm so far generally happy with things, it was just that I was expecting a little better IO performance. I have no clue if my expectations are unreal. The NAS is there as a general purpose file storage and as a media server for XBMC and other devices. ZFS is a requirement. Question: Where is my bottle-neck, and is there anything I can do config wise, to improve my performance? I'm thinking VM-disk settings could be something but I really have no idea where to go since I'm neither experienced with FreeNAS nor VMware-WS. Tests: When I'm on the host OS and copy files (from the SSD) to the CIFS share, I get around 30 Mbytes/sec read and write. When I'm on my laptop laptop, wired to the network, I get about the same specs. The test I've done are with a 16 GB ISO, and with about 200 MB of RARs and I've tried avoiding the RAM-cache by reading different files than the ones I'm writing ( 10 GB). It feels like having less CPU cores is a lot more efficient, since the resource manager in Windows reports less CPU-usage. With 4 cores in VMware, CPU usage was 50-80%, with 1 core it was 25-60%. EDIT: HD ActiveTime was quite high on SSD so I moved the page file, disabled hibernate and enabled Win DiskCache both on SSD and RAID. This resulted in no real performance difference for one file, but if i transferred 2 files the total speed went up to 50 Mbytes/s vs ~40. The ActiveTime avg also went down a lot (to ~20%) but has now higher bursts. DiskIO is on ~ 30-35 Mbytes/s avgs, with ~100Mb bursts. Network is on 200-250Mbits/s with ~45 active TCP connections. Hardware Asus F2A85-M Pro A10-5700 16GB DDR3 1600 OCZ Vertex 2 128GB SSD 2x Generic 1tb 7200 RPM drives as RAID0 (in win7) Intel Gigabit Desktop CT Software Host OS: Win7 (SSD) VMware Worksation 9 (SSD) FreeNAS 8.3 VM (20GB VDisk on SSD) CPU: I've tried 1, 2 and 4 cores. Virtualisation engine, Preferred mode: Automatic 10,24Gb ram 50Gb SCSI VDisk on the RAID0, VDisk is formatted as ZFS and exposed through CIFS through FreeNAS. NIC Bridge, Replicate physical network state Below are two typical process print-outs while I'm transfering one file to the CIFS share. last pid: 2707; load averages: 0.60, 0.43, 0.24 up 0+00:07:05 00:34:26 32 processes: 2 running, 30 sleeping Mem: 101M Active, 53M Inact, 1620M Wired, 2188K Cache, 149M Buf, 8117M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 102 0 50164K 10364K RUN 0:25 25.98% smbd 1897 root 6 44 0 168M 74808K uwait 0:02 0.00% python last pid: 2746; load averages: 0.93, 0.60, 0.33 up 0+00:08:53 00:36:14 33 processes: 2 running, 31 sleeping Mem: 101M Active, 53M Inact, 4722M Wired, 2188K Cache, 152M Buf, 5015M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 76 0 50164K 10364K RUN 0:52 16.99% smbd 1897 root 6 44 0 168M 74816K uwait 0:02 0.00% python I'm sorry if my question isn't phrased right, I'm really bad at these kind of things, and it is the first time I post here at SU. I also appreciate any other suggestions to something, I could have missed.

  Read the article

• What would cause Memcached to Hang for 2+ seconds?

  - by Brad Dwyer

  I'm going nuts trying to scale memcached. From their site: Memcached operations are almost all O(1). Connecting to it and issuing a get or stat command should never lag. If connecting lags, you may be hitting the max connections limit. See ServerMaint for details on stats to monitor. If issuing commands lags, you can have a number of tuning problems. Most common are hardware problems, not enough RAM (swapping), network problems (bandwidth, dropped packets, half-duplex connections). On rare occasion OS bugs or memcached bugs can contribute. Well.. it is most certainly not performing like an O(1) operation for me. Under low to normal load on our site memcached response times for get and set ops are about 0.001 seconds. Not bad. But if we triple the load we get outliers that take 100x (or in rare cases 1000x!) that long. I even had one instance where it took 2.2442 seconds for memcached to store a value. Obviously this is killing our site. Here's the output of Memcached-getStats during one of the slow periods: [pid] => 18079 [uptime] => 8903 [threads] => 4 [time] => 1332795759 [pointer_size] => 32 [rusage_user_seconds] => 26 [rusage_user_microseconds] => 503872 [rusage_system_seconds] => 125 [rusage_system_microseconds] => 477008 [curr_items] => 42099 [total_items] => 422500 [limit_maxbytes] => 943718400 [curr_connections] => 84 [total_connections] => 4946 [connection_structures] => 178 [bytes] => 7259957 [cmd_get] => 1679091 [cmd_set] => 351809 [get_hits] => 1662048 [get_misses] => 17043 [evictions] => 0 [bytes_read] => 109388476 [bytes_written] => 3187646458 [version] => 1.4.13 So things that I have ruled out so far are: Hitting the max connections limit (curr_connections of 84 is well below the default of max of 1024) Swapping - the machine has 900M out of 1024M of memory dedicated to memcached on a dedicated machine. It only appears to be using about 7MB of data as per the bytes stat. How would I diagnose the other hardware problems? prstat doesn't really show a whole lot going on in terms of CPU or memory usage. Not sure how to figure out the network problems but as this is a dedicated server on the same private network as the web box I don't think it's a connectivity issue (ping is less than a millisecond between the boxes). Is there something else I'm missing here? It's driving me nuts. Edit: Also forgot to mention that I've tried both persistent and non-persistent connections with minimal-to-no impact.

  Read the article

• Cannot open simplest mac application

  - by streetpc

  I created a very simple app, which is only a wrapper of a shell script (so that I can select this script in application selectors, like startup apps). I try to launch it and yesterday it worked, but today I changed the executable script's content and name (with something that perfeclty works in a shell script launched in the Terminal) and it will only display a Finder-iconed dialog saying Cannot open the application because it is not supported on this kind of Mac. I restored the previous script (content/name) but I still get the error! Same when re-bundling the app from scratch, or completely changing the bundle identifier… If I try to open it in the Terminal using open My.app, I get The application cannot be opened because it has an incorrect executable format. But when I executes directly the Contents/MacOS/Script, it allways works (iwth both contents). Also, it is displayed with correct icon and meta-information in the Finder (so I guess the Info.plist is understood). The app's file tree is: Contents/ Info.plist MacOS/ Script (executable bit set, works when launched directly) PkgInfo Resources/ AppIcon.icns Here is the Info.plist content: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleExecutable</key> <string>Script</string> <key>CFBundleIconFile</key> <string>AppIcon</string> <key>CFBundleIdentifier</key> <string>asdf.ScriptApp</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>My script</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>1.0</string> <key>CFBundleSignature</key> <string>????</string> <key>CFBundleVersion</key> <string>1</string> <key>LSMinimumSystemVersion</key> <string>10.4</string> </dict> </plist> And the PkgInfo file only contains APPL????. I tested the Script with a simple echo "ok" and echo "ok" >/tmp/test (plus #!/bin/sh header). So my questions are: * Is there some kind of validity caching for applications ? based on what ? how do I flush it ? * Where does this message come from ? I tried to google it but all I get is a page talking about 32/64 bits Java…

  Read the article

• Mysqld not starting due to apparent db corruption

  - by pitosalas

  I am very new at admining mysql, and bad for me, something caused the db to get clobbered. There are many error messages in the log that I am not sure how to safely proceed. Can you give some tips? Here's the log: 110107 15:07:15 mysqld started 110107 15:07:15 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 110107 15:07:15 InnoDB: Starting log scan based on checkpoint at InnoDB: log sequence number 35 515914826. InnoDB: Doing recovery: scanned up to log sequence number 35 515915839 InnoDB: 1 transaction(s) which must be rolled back or cleaned up InnoDB: in total 1 row operations to undo InnoDB: Trx id counter is 0 1697553664 110107 15:07:15 InnoDB: Starting an apply batch of log records to the database... InnoDB: Progress in percents: 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 InnoDB: Apply batch completed InnoDB: Starting rollback of uncommitted transactions InnoDB: Rolling back trx with id 0 1697553198, 1 rows to undoInnoDB: Error: trying to access page number 3522914176 in space 0, InnoDB: space name ./ibdata1, InnoDB: which is outside the tablespace bounds. InnoDB: Byte offset 0, len 16384, i/o type 10 110107 15:07:15InnoDB: Assertion failure in thread 3086403264 in file fil0fil.c line 3922 InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/mysql/en/Forcing_recovery.html InnoDB: about forcing recovery. mysqld got signal 11; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=0 read_buffer_size=131072 max_used_connections=0 max_connections=100 threads_connected=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 217599 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd=(nil) Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... Cannot determine thread, fp=0xbffc55ac, backtrace may not be correct. Stack range sanity check OK, backtrace follows: 0x8139eec 0x83721d5 0x833d897 0x833db71 0x832aa38 0x835f025 0x835f7a3 0x830a77e 0x8326b57 0x831c825 0x8317b8d 0x82a9e66 0x8315732 0x834fc9a 0x828d7c3 0x81c29dd 0x81b5620 0x813d9fe 0x40fdf3 0x80d5ff1 New value of fp=(nil) failed sanity check, terminating stack trace! Please read http://dev.mysql.com/doc/mysql/en/Using_stack_trace.html and follow instructions on how to resolve the stack trace. Resolved stack trace is much more helpful in diagnosing the problem, so please do resolve it The manual page at http://www.mysql.com/doc/en/Crashing.html contains information that should help you find out what is causing the crash. 110107 15:07:15 mysqld ended

  Read the article

• Windows 7 disk errors after a few hours of runtime

  - by GFK

  I'm having trouble understanding what is going on with my work PC. Whenever I boot it, it runs fine for a while, then starts to randomly show disk errors. The displayed error often contains the message "not enough storage is available to process this command", although depending on the application that fails it can be different. This has happened for weeks now and is getting worse. This is what troubles me: It never seems to impact critical parts of the system (no BSOD, no freeze). Only some applications seem impacted, refusing to function correctly after a while: Outlook 2010 cannot download RSS feeds anymore, Firefox 6 or IE9 cannot download anything bigger than 3MB without failing, Windows Update fails, all msi installers fail, Visual Studio 2010 starts failing in weird manners... It only happens after a while using it (typically 3 hours, but it seems that installing a program or compiling several times makes it shorter) Rebooting solves it (temporarily). The system: The OS is Windows 7 Pro Spanish SP1, 32 bits The system is an HP Compaq 6000 Pro with 4 GB memory (only 3.4GB usable since the system is 32bit), one 500GB hard drive. Installed applications include: Visual Studio 2010, SQL Server 2008 R2, VMWare Workstation 7, Microsoft Security Essentials, Office 2010. Shutting down all related services and processes doesn't seem to change anything. The diagnostics I've run so far: Hard drive : 465GB, 165GB free Process Explorer : physical and virtual memory seem ok (pagefile is 5.3GB, physical memory usage 70%, system commit 39%) Windows Memory diagnostic tool: OK CHKDSK returned: 488282111 KB total disk space. 281668248 KB in 265779 files. 150188 KB in 62949 indexes. 0 KB in bad sectors. 571755 KB in use by the system. The log file has occupied 65536 kilobytes. 205891920 KB available on disk. For non-spanish speakers, that means all ok. SMART diagnostic tools (DiskCheckup) report all values normal. temperatures are in the normal range (HWinfo). The event viewer doesn't seem to contain any significant message. ran CCleaner 3, without any noticeable effect. I was thinking about some file number limit (between Visual Studio projects and other applications, there are around 300.000 files on the hard drive), but I couldn't find any. It's possible there is something related with the use of the temporary folders (it's the only explanation I have for why applications fail but Windows doesn't), but I cannot confirm that. Only thing I cannot find out is if chkdsk reporting 65MB for the log is normal. It seems since Vista it always reports this. Any other cleaning/diagnostic tool you might know of? Edit: I ran several other tools since I first published the question: Seagate SeaTools (the HD manufacturer's analysis tool): complete test run OK. Intel Rapid 10.1 (the HD controller manufacturer's troubleshooting tool): the HD's ok. Microsoft Desktop Heap Monitor: Desktop Heap Information Monitor Tool (Version 8.1.2925.0) Copyright (c) Microsoft Corporation. All rights reserved. Session ID: 1 Total Desktop: ( 46464 KB - 11 desktops) WinStation\Desktop Heap Size(KB) Used Rate(%) WinSta0\Winlogon (s1) 128 3.6 WinSta0\Disconnect (s1) 64 3.8 WinSta0\Default (s1) 20480 3.0 msswindowstation\mssrestricteddesk (s0) 1024 0.2 __X78B95_89_IW__A8D9S1_42_ID (s0) 1024 0.2 Service-0x0-3e5$\Default (s0) 1024 0.6 Service-0x0-3e4$\Default (s0) 1024 0.3 Service-0x0-3e7$\Default (s0) 1024 2.1 WinSta0\Winlogon (s0) 128 1.9 WinSta0\Disconnect (s0) 64 3.8 WinSta0\Default (s0) 20480 0.0 All ok, desktop heap usage < 5% Edit 2: I tried totally resetting my account by creating a new one, logging under this new one and delete the first one (local rights and files), then logging back with this deleted account (it is a domain account). No luck. Also, I found out often the error is "not enough storage is available to process this command". Searching on the internet, I found an old troubleshooting tip (setting a registry key to raise the IRP stack limit, whatever it is) which did not change anything.

  Read the article

• MySQL reserves too much RAM

  - by Buddy

  I have a cheap VPS with 128Mb RAM and 256Mb burst. MySQL starts and reserves about 110Mb, but uses not more than 20Mb of them. My VPS Control Panel shows, that I use 127Mb (I also running nginx and sphinx), I know, that it shows reserved RAM, but when I reach over 128Mb, my VPS reboots automatically every 4 hours. So I want to force MySQL to reserve less RAM. How can i do that? I did some tweaks with my.conf but it helped not so much. top output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 15 0 2156 668 572 S 0.0 0.3 0:00.03 init 11311 root 15 0 11212 356 228 S 0.0 0.1 0:00.00 vzctl 11312 root 18 0 3712 1484 1248 S 0.0 0.6 0:00.01 bash 11347 root 18 0 2284 916 732 R 0.0 0.3 0:00.00 top 13978 root 17 -4 2248 552 344 S 0.0 0.2 0:00.00 udevd 14262 root 15 0 1812 564 472 S 0.0 0.2 0:00.03 syslogd 14293 sphinx 15 0 11816 1172 672 S 0.0 0.4 0:00.07 searchd 14305 root 25 0 7192 1036 636 S 0.0 0.4 0:00.00 sshd 14321 root 25 0 2832 836 668 S 0.0 0.3 0:00.00 xinetd 15389 root 18 0 3708 1300 1132 S 0.0 0.5 0:00.00 mysqld_safe 15441 mysql 15 0 113m 16m 4440 S 0.0 6.4 0:00.15 mysqld 15489 root 21 0 13056 1456 340 S 0.0 0.6 0:00.00 nginx 15490 nginx 18 0 13328 2388 992 S 0.0 0.9 0:00.06 nginx 15507 nginx 25 0 19520 5888 4244 S 0.0 2.2 0:00.00 php-cgi 15508 nginx 18 0 19636 4876 2748 S 0.0 1.9 0:00.12 php-cgi 15509 nginx 15 0 19668 4872 2716 S 0.0 1.9 0:00.11 php-cgi 15518 root 18 0 4492 1116 568 S 0.0 0.4 0:00.01 crond MySQL tuner: >> MySQLTuner 1.0.1 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering Please enter your MySQL administrative login: root Please enter your MySQL administrative password: -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.0.77 [OK] Operating on 32-bit architecture with less than 2GB RAM -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in InnoDB tables: 1M (Tables: 1) [OK] Total fragmented tables: 0 -------- Performance Metrics ------------------------------------------------- [--] Up for: 38m 43s (37 q [0.016 qps], 20 conn, TX: 4M, RX: 3K) [--] Reads / Writes: 100% / 0% [--] Total buffers: 28.1M global + 832.0K per thread (100 max threads) [OK] Maximum possible memory usage: 109.4M (42% of installed RAM) [OK] Slow queries: 0% (0/37) [OK] Highest usage of available connections: 1% (1/100) [OK] Key buffer size / total MyISAM indexes: 128.0K/64.0K [OK] Query cache efficiency: 42.1% (8 cached / 19 selects) [OK] Query cache prunes per day: 0 [!!] Temporary tables created on disk: 27% (3 on disk / 11 total) [!!] Thread cache is disabled [OK] Table cache hit rate: 57% (8 open / 14 opened) [OK] Open file limit used: 1% (12/1K) [OK] Table locks acquired immediately: 100% (22 immediate / 22 locks) [!!] Connections aborted: 10% [OK] InnoDB data size / buffer pool: 1.5M/8.0M -------- Recommendations ----------------------------------------------------- General recommendations: MySQL started within last 24 hours - recommendations may be inaccurate Enable the slow query log to troubleshoot bad queries When making adjustments, make tmp_table_size/max_heap_table_size equal Reduce your SELECT DISTINCT queries without LIMIT clauses Set thread_cache_size to 4 as a starting value Your applications are not closing MySQL connections properly Variables to adjust: tmp_table_size (> 32M) max_heap_table_size (> 16M) thread_cache_size (start at 4) I think if I do what MySQLtuner says, MySQL will use more RAM.

  Read the article

• "The server closed the connection without sending any data"

  - by Toby

  Server setup The problem Diagnostic information What I've tried Specific Help needed 1. I have the following server setup: Debian Squeeze Linux 2.6.32-5-amd64 Apache2-mpm-prefork 2.2.16-6+squeeze10 PHP 5.3.3-7+squeeze14 This server is protected with the Suhosin Patch 0.9.9.1 Max Requests Per Child: 0 - Keep Alive: on - Max Per Connection: 100 Timeouts Connection: 300 - Keep-Alive: 15 Loaded Modules core mod_log_config mod_logio prefork http_core mod_so mod_alias mod_auth_basic mod_auth_digest mod_authn_file mod_authz_default mod_authz_groupfile mod_authz_host mod_authz_user mod_cgi mod_deflate mod_dir mod_env mod_mime mod_negotiation mod_php5 mod_reqtimeout mod_rewrite mod_setenvif mod_ssl mod_status Wordpress 3.4.2 (Upgrading to 3.5 soon :) 2. The problem When I restart the server (sudo shutdown -r now), going to any website page results in the following error from the web browser (in this case, Google Chrome, but other browsers also show the same error). This error can also occur an hour or so after all is working ok, seemingly randomly, which is my biggest concern as it means my server is not reliable: No data received Unable to load the web page because the server sent no data. Here are some suggestions: Reload this web page later. Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data. 3. Diagnostic information The apache error log contains the folowing entries: [Fri Dec 14 22:23:27 2012] [notice] child pid 1955 exit signal Floating point exception (8) [Fri Dec 14 22:23:27 2012] [notice] child pid 1956 exit signal Floating point exception (8) [Fri Dec 14 22:23:29 2012] [notice] child pid 1957 exit signal Floating point exception (8) [Fri Dec 14 22:23:30 2012] [notice] child pid 1958 exit signal Floating point exception (8) [Fri Dec 14 22:23:32 2012] [notice] child pid 1959 exit signal Floating point exception (8) [Fri Dec 14 22:23:32 2012] [notice] child pid 1960 exit signal Floating point exception (8) [Fri Dec 14 22:23:34 2012] [notice] child pid 1961 exit signal Floating point exception (8) [Fri Dec 14 22:23:34 2012] [notice] child pid 1962 exit signal Floating point exception (8) 4. What I've tried a) I can 'fix' the website temporarily by resetting the server twice (resetting it once does not work) using the following commands. NB: the 'reload' option does not work, I have to use restart twice. However, the error can reoccur sometime later. sudo /etc/init.d/apache2 restart sudo /etc/init.d/apache2 restart b) I have tried disabling suhosin by uninstalling php5-suhosin, but a php info page still shows "This server is protected with the Suhosin Patch 0.9.9.1". I have tried putting Suhosin into simulation mode by creating a file /etc/php5/apache2/conf.d/suhosin.ini containing: [suhosin] suhosin.simulation = On The php info page shows the suhosin.ini file in the list of "Additional .ini files parsed" but the php info page still shows "This server is protected with the Suhosin Patch 0.9.9.1" c) Increasing the PHP memory limit In /etc/php5/apache2/ : ; Maximum amount of memory a script may consume (128MB) ; http://php.net/memory-limit memory_limit = 512M d) Disabling all Wordpress plugins, and going back to the default theme. 5. Specific help needed I would very much like help in debugging what is going on here. I am not sure how to determine what processes are in the Apache error log which are exiting "[notice] child pid 1955 exit signal Floating point exception (8)", or what is causing them to exit. And whether suhosin is part of the problem (and how to disable it if it is). Thank you in advance for any advice or tips you can offer in helping me debug this.

  Read the article

• Cannot open simplest script mac application

  - by streetpc

  I created a very simple app, which is only a wrapper of a shell script (so that I can select this script in application selectors, like startup apps). I try to launch it and yesterday it worked, but today I changed the executable script's content and name (with something that perfeclty works in a shell script launched in the Terminal) and it will only display a Finder-iconed dialog saying Cannot open the application because it is not supported on this kind of Mac. I restored the previous script (content/name) but I still get the error! Same when re-bundling the app from scratch, or completely changing the bundle identifier… If I try to open it in the Terminal using open My.app, I get The application cannot be opened because it has an incorrect executable format. But when I executes directly the Contents/MacOS/Script, it allways works (iwth both contents). Also, it is displayed with correct icon and meta-information in the Finder (so I guess the Info.plist is understood). The app's file tree is: Contents/ Info.plist MacOS/ Script (executable bit set, works when launched directly) PkgInfo Resources/ AppIcon.icns Here is the Info.plist content: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleExecutable</key> <string>Script</string> <key>CFBundleIconFile</key> <string>AppIcon</string> <key>CFBundleIdentifier</key> <string>asdf.ScriptApp</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>My script</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>1.0</string> <key>CFBundleSignature</key> <string>????</string> <key>CFBundleVersion</key> <string>1</string> <key>LSMinimumSystemVersion</key> <string>10.4</string> </dict> </plist> And the PkgInfo file only contains APPL????. I tested the Script with a simple echo "ok" and echo "ok" >/tmp/test (plus #!/bin/sh header). So my questions are: Is there some kind of validity caching for applications ? based on what ? how do I flush it ? Where does this message come from ? I tried to google it but all I get is a page talking about 32/64 bits Java…

  Read the article

• Installing EclipseFP on Mac OS X

  - by Dom Kennedy

  I am trying to install EclipseFP. I'm running OS X Mavericks. I've tried following both the official installation instructions and the advice in this answer on SU, but I'm still having the same problem. I can get the plugin itself installed painlessly using Help -> Install New Software..., Bbut when I restart and switch to the Haskell perspective, things start to go wrong. The installation instructions tells me that I should receive a prompt to install BuildWrapper and Scion Browser. I do not receive this prompt. Furthermore, if I create a new Haskell project, my code has no syntax highlighting, and the Hoogle search feature does not appear to do anything. It's clear that the plugin is not set up correctly yet. I've tried running cabal update in Terminal, but this does not change anything. After several attempts going round in circles with this on Eclipse Juno, I uninstalled Eclispe and the Haskell Platform and performed a clean install of Eclipse Luna and the latest Haskell Platform. However, the problems are persisting. I've tried going into Preferences to see if I could sort any of this out manually. I should initially point out that my GHC installation seems to be correctly references under Preferences -> Haskell Implementations Under Haskell -> Helper executables, there are areas for configuring the options of both BuildWrapper and Scion Browser. At present, both are blank. I tried clicking the Install from Hackage... button beside each of them with no success; I receive an error message saying Expected executable <workspace>/.metadata/.plugins/net.sf.eclipsefp.haskell.ui/sandbox/.cabal-sandbox/bin/buildwrapper not found!` (replace buildwrapper for scion-browser and the message is the same) The Eclipse console displays the following exception after doing the above with BuildWrapper: src/Language/Haskell/BuildWrapper/GHCStorage.hs:313:32: Not in scope: data constructor ‘MatchGroup’ cabal.real: Error: some packages failed to install: buildwrapper-0.7.4 failed during the building phase. The exception was: ExitFailure 1 and after doing it for Scion-Browser: zip-archive-0.2.3.4 (reinstall) changes: text-1.1.0.0 -> 0.11.3.1 pandoc-1.12.3.3 (latest: 1.13) -http-conduit (new version) Graphalyze-0.14.1.0 (reinstall) changes: pandoc-1.12.4.2 -> 1.12.3.3, text-1.1.0.0 -> 0.11.3.1 cabal.real: The following packages are likely to be broken by the reinstalls: pandoc-1.12.4.2 unordered-containers-0.2.4.0 aeson-0.7.0.4 scientific-0.2.0.2 case-insensitive-1.1.0.3 HTTP-4000.2.10 Use --force-reinstalls if you want to install anyway. After receiving similar results as the above on previous attempts, I've tried using force-reinstalls and ended up at more dead ends. I am at a loss as to what is wrong and how to solve this. I should point out that my GHC installation appears to be correctly configured under Preferences -> Haskell -> Haskell Implementations. Apologies if any of this information is irrelevant, I'm just not really sure what is important and what isn't at this point. Any help anyone could provide me with would be greatly appreciated.

  Read the article

• How do I allow mysqld to use more than 24.9% of my cpu?

  - by Joseph Yancey

  I have a Web server running on RHEL that is running Apache and MySQL. It has a Quad core 3.2Ghz Xeon CPU and 8 Gigs of RAM Most of the time, we don't have any issues at all. Our web application is very database intensive. When our usage gets pretty heavy MySQL will peg out at using 24.9% of the cpu. Most of the time, it hangs around below 5%. I have speculated that it is only using one core of the CPU and it is pegging out that core but TOP shows me in the cpu column that mysqld changes cores even while the usage stays at 24.9%. When it does this MySQL gets painfully slow as it is queuing up queries Is there some magic configuration that will tell mysql to use more cpu when it needs to? Also, any other advice on my configuration would be helpful. We run two applications on this server. One that runs Innodb but doesn't get much usage (it has been replaced by the other app), and one that runs MyIsam and gets lots of use. Overall, our whole mysql data directory is something like 13Gigs if that matters at all. Here is my config: [root@ProductionLinux root]# cat /etc/my.cnf [mysqld] server-id = 71 log-bin = /var/log/mysql/mysql-bin.log binlog-do-db = oldapplication binlog-do-db = newapplication binlog-do-db = support thread_cache_size = 30 key_buffer_size = 256M table_cache = 256 sort_buffer_size = 4M read_buffer_size = 1M skip-name-resolve innodb_data_home_dir = /usr/local/mysql/data/ innodb_data_file_path = InnoDB:100M:autoextend set-variable = innodb_buffer_pool_size=70M set-variable = innodb_additional_mem_pool_size=10M set-variable = max_connections=500 innodb_log_group_home_dir = /usr/local/mysql/data innodb_log_arch_dir = /usr/local/mysql/data set-variable = innodb_log_file_size=20M set-variable = innodb_log_buffer_size=8M innodb_flush_log_at_trx_commit = 1 log-queries-not-using-indexes log-error = /var/log/mysql/mysql-error.log mysql show variables; +---------------------------------+-----------------------------------------------------------------------------+ | Variable_name | Value | +---------------------------------+-----------------------------------------------------------------------------+ | auto_increment_increment | 1 | | auto_increment_offset | 1 | | automatic_sp_privileges | ON | | back_log | 50 | | basedir | /usr/local/mysql-standard-5.0.18-linux-x86_64-glibc23/ | | binlog_cache_size | 32768 | | bulk_insert_buffer_size | 8388608 | | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | latin1 | | character_set_results | latin1 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/local/mysql-standard-5.0.18-linux-x86_64-glibc23/share/mysql/charsets/ | | collation_connection | latin1_swedish_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | | completion_type | 0 | | concurrent_insert | 1 | | connect_timeout | 5 | | datadir | /usr/local/mysql/data/ | | date_format | %Y-%m-%d | | datetime_format | %Y-%m-%d %H:%i:%s | | default_week_format | 0 | | delay_key_write | ON | | delayed_insert_limit | 100 | | delayed_insert_timeout | 300 | | delayed_queue_size | 1000 | | div_precision_increment | 4 | | engine_condition_pushdown | OFF | | expire_logs_days | 0 | | flush | OFF | | flush_time | 0 | | | ft_max_word_len | 84 | | ft_min_word_len | 4 | | ft_query_expansion_limit | 20 | | ft_stopword_file | (built-in) | | group_concat_max_len | 1024 | | have_archive | YES | | have_bdb | NO | | have_blackhole_engine | NO | | have_compress | YES | | have_crypt | YES | | have_csv | NO | | have_example_engine | NO | | have_federated_engine | NO | | have_geometry | YES | | have_innodb | YES | | have_isam | NO | | have_ndbcluster | NO | | have_openssl | NO | | have_query_cache | YES | | have_raid | NO | | have_rtree_keys | YES | | have_symlink | YES | | init_connect | | | init_file | | | init_slave | | | innodb_additional_mem_pool_size | 10485760 | | innodb_autoextend_increment | 8 | | innodb_buffer_pool_awe_mem_mb | 0 | | innodb_buffer_pool_size | 73400320 | | innodb_checksums | ON | | innodb_commit_concurrency | 0 | | innodb_concurrency_tickets | 500 | | innodb_data_file_path | InnoDB:100M:autoextend | | innodb_data_home_dir | /usr/local/mysql/data/ | | innodb_doublewrite | ON | | innodb_fast_shutdown | 1 | | innodb_file_io_threads | 4 | | innodb_file_per_table | OFF | | innodb_flush_log_at_trx_commit | 1 | | innodb_flush_method | | | innodb_force_recovery | 0 | | innodb_lock_wait_timeout | 50 | | innodb_locks_unsafe_for_binlog | OFF | | innodb_log_arch_dir | /usr/local/mysql/data | | innodb_log_archive | OFF | | innodb_log_buffer_size | 8388608 | | innodb_log_file_size | 20971520 | | innodb_log_files_in_group | 2 | | innodb_log_group_home_dir | /usr/local/mysql/data | | innodb_max_dirty_pages_pct | 90 | | innodb_max_purge_lag | 0 | | innodb_mirrored_log_groups | 1 | | innodb_open_files | 300 | | innodb_support_xa | ON | | innodb_sync_spin_loops | 20 | | innodb_table_locks | ON | | innodb_thread_concurrency | 20 | | innodb_thread_sleep_delay | 10000 | | interactive_timeout | 28800 | | join_buffer_size | 131072 | | key_buffer_size | 268435456 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | language | /usr/local/mysql-standard-5.0.18-linux-x86_64-glibc23/share/mysql/english/ | | large_files_support | ON | | large_page_size | 0 | | large_pages | OFF | | license | GPL | | local_infile | ON | | locked_in_memory | OFF | | log | OFF | | log_bin | ON | | log_bin_trust_function_creators | OFF | | log_error | /var/log/mysql/mysql-error.log | | log_slave_updates | OFF | | log_slow_queries | OFF | | log_warnings | 1 | | long_query_time | 10 | | low_priority_updates | OFF | | lower_case_file_system | OFF | | lower_case_table_names | 0 | | max_allowed_packet | 1048576 | | max_binlog_cache_size | 18446744073709551615 | | max_binlog_size | 1073741824 | | max_connect_errors | 10 | | max_connections | 500 | | max_delayed_threads | 20 | | max_error_count | 64 | | max_heap_table_size | 16777216 | | max_insert_delayed_threads | 20 | | max_join_size | 18446744073709551615 | | max_length_for_sort_data | 1024 | | max_relay_log_size | 0 | | max_seeks_for_key | 18446744073709551615 | | max_sort_length | 1024 | | max_sp_recursion_depth | 0 | | max_tmp_tables | 32 | | max_user_connections | 0 | | max_write_lock_count | 18446744073709551615 | | multi_range_count | 256 | | myisam_data_pointer_size | 6 | | myisam_max_sort_file_size | 9223372036854775807 | | myisam_recover_options | OFF | | myisam_repair_threads | 1 | | myisam_sort_buffer_size | 8388608 | | myisam_stats_method | nulls_unequal | | net_buffer_length | 16384 | | net_read_timeout | 30 | | net_retry_count | 10 | | net_write_timeout | 60 | | new | OFF | | old_passwords | OFF | | open_files_limit | 2510 | | optimizer_prune_level | 1 | | optimizer_search_depth | 62 | | pid_file | /usr/local/mysql/data/ProductionLinux.pid | | port | 3306 | | preload_buffer_size | 32768 | | protocol_version | 10 | | query_alloc_block_size | 8192 | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 0 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | | range_alloc_block_size | 2048 | | read_buffer_size | 1044480 | | read_only | OFF | | read_rnd_buffer_size | 262144 | | relay_log_purge | ON | | relay_log_space_limit | 0 | | rpl_recovery_rank | 0 | | secure_auth | OFF | | server_id | 71 | | skip_external_locking | ON | | skip_networking | OFF | | skip_show_database | OFF | | slave_compressed_protocol | OFF | | slave_load_tmpdir | /tmp/ | | slave_net_timeout | 3600 | | slave_skip_errors | OFF | | slave_transaction_retries | 10 | | slow_launch_time | 2 | | socket | /tmp/mysql.sock | | sort_buffer_size | 4194296 | | sql_mode | | | sql_notes | ON | | sql_warnings | ON | | storage_engine | MyISAM | | sync_binlog | 0 | | sync_frm | ON | | sync_replication | 0 | | sync_replication_slave_id | 0 | | sync_replication_timeout | 10 | | system_time_zone | CST | | table_cache | 256 | | table_lock_wait_timeout | 50 | | table_type | MyISAM | | thread_cache_size | 30 | | thread_stack | 262144 | | time_format | %H:%i:%s | | time_zone | SYSTEM | | timed_mutexes | OFF | | tmp_table_size | 33554432 | | tmpdir | | | transaction_alloc_block_size | 8192 | | transaction_prealloc_size | 4096 | | tx_isolation | REPEATABLE-READ | | updatable_views_with_limit | YES | | version | 5.0.18-standard-log | | version_comment | MySQL Community Edition - Standard (GPL) | | version_compile_machine | x86_64 | | version_compile_os | unknown-linux-gnu | | wait_timeout | 28800 | +---------------------------------+-----------------------------------------------------------------------------+ 210 rows in set (0.00 sec)

  Read the article

• How to install Delorme StreetAtlas (any version) + GPS inside VirtualBox VM?

  - by hotei

  When I try to run the install program I get a popup message that says the installer program is not a valid executable. Background: I want a GPS with maps on my laptop running Ubuntu 10.4LTS. Unfortunately I can't find a decent native Linux GPS solution with 50 state US street level coverage. I have VirtualBox VMs available for WinXP and Win7 (among others). The VMs work fine with MicroSoft Streets and Trips (2010) and MapNGo 5 (a very! old Delorme product), but while both these products support GPS, they don't support the Earthmate LT-40 USB GPS I already have. I've got pretty much every Delorme Street Atlas they've released in the last decade and none of them will install in a VM. Any help would be much appreciated. Clarification: I've installed the Delorme products from these CDs before and the disks are fine - as long as installation is done on a "physical" machine. Added: I've tried install from an iso as well as the real CD. No difference in result (setup.exe is not a valid executable) The WinXP is SP-2 (held back on purpose at this point - I'll snapshot and fork a later SP to test). The Win2K is SP-6a. Win7(32) VM is whatever updates came out last week. The USB setup is working at least to the point where the GPS device is active in the device list (has an x in the box). At this point its not relevant because the program that needs to read it can't even be installed. Added 9-19: Added wine as harrymc suggested. Initial result was no change. Here's wines error message. The file '/media/Disk1/setup.exe' is not marked as executable. If this was downloaded or copied form an untrusted source, it may be dangerous to run. For more details, read about the executable bit. At first I thought the execute bit was the problem, but looking at several other windows CDs I see that the execute bit is not set on their exe files (which install to VM without error). Still it was worth a shot so I copied the StreetAtlas 9 DVD to my hard disk, changed the on-disk exe files to have the execute bit set and tried to install again. This time the install via wine got me through the installation process. When I start the program it bombs immediately, so we haven't made much real progress so far. I very much prefer the VM solution to wine, so I'm going back to that for now. To recap the VM situation, using an updated XP with SP3 and all recommended hotfixes: StreetAtlas 2009 USA fails with "not marked as executable". StreetAtlas 2007 USA fails with "not marked as executable". StreetAtlas 9 (copyright 2001) fails with "not marked as executable". SteeetAtlas (copyright 1991) fails with "not marked as executable" Delorme Topo 4 (copyright 2002) fails with "not marked as executable". Just about ready to give up. So I switched from XP VM to Win7 VM and tried StreetAtlas 2009 again. This time it installs. Earthmate USB GPS works. WTH? I feel like the monkey who just wrote a line of Shakespear. I'm smiling because it worked, but I have no clue why. I'm awarding the bounty to harrymc because wine did give some useful insight into the problem and a +1 to goyiux as thanks for helping.

  Read the article

• need assistance with my.cnf - 1500% CPU usage

  - by Alan Long

  I'm running into a few issues with our new database server. It is a HP G8 with 2 INTEL XEON E5-2650 processors and 32GB of ram. This server is dedicated as a MySQL server (5.1.69) for our intranet portal. I have been having issues with this server staying alive - I notice high CPU usage during certain times of day (8% ~ 1500%+) and see very low memory usage (7 ~ 15%) based on using the 'top' command. When the CPU usage passes 1000%, that is when the app usually dies. I'm trying to see what I'm doing wrong with the config file, hopefully one of the experts can chime in and let me know what they think. See below for my.cnf file: [mysqld] default-storage-engine=InnoDB datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock #user=mysql large-pages # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 max_connections=275 tmp_table_size=1G key_buffer_size=384M key_buffer=384M thread_cache_size=1024 long_query_time=5 low_priority_updates=1 max_heap_table_size=1G myisam_sort_buffer_size=8M concurrent_insert=2 table_cache=1024 sort_buffer_size=8M read_buffer_size=5M read_rnd_buffer_size=6M join_buffer_size=16M table_definition_cache=6k open_files_limit=8k slow_query_log #skip-name-resolve # Innodb Settings innodb_buffer_pool_size=18G innodb_thread_concurrency=0 innodb_log_file_size=1G innodb_log_buffer_size=16M innodb_flush_log_at_trx_commit=2 innodb_lock_wait_timeout=50 innodb_file_per_table #innodb_buffer_pool_instances=4 #eliminating double buffering innodb_flush_method = O_DIRECT flush_time=86400 innodb_additional_mem_pool_size=40M #innodb_io_capacity = 5000 #innodb_read_io_threads = 64 #innodb_write_io_threads = 64 # increase until threads_created doesnt grow anymore thread_cache=1024 query_cache_type=1 query_cache_limit=4M query_cache_size=256M # Try number of CPU's*2 for thread_concurrency thread_concurrency = 0 wait_timeout = 1800 connect_timeout = 10 interactive_timeout = 60 [mysqldump] max_allowed_packet=32M [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid log-slow-queries=/var/log/mysql/slow-queries.log long_query_time = 1 log-queries-not-using-indexes we connect to one database with 75 tables, the largest table has 1,150,000 entries and the second largest has 128,036 entries. I have also verified that our PHP queries are optimized as best as possible. Reference - MySQLtuner: >> MySQLTuner 1.2.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.69-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in InnoDB tables: 420M (Tables: 75) [!!] Total fragmented tables: 75 -------- Security Recommendations ------------------------------------------- [!!] User '[email protected]' has no password set. -------- Performance Metrics ------------------------------------------------- [--] Up for: 1h 14m 50s (8M q [1K qps], 705 conn, TX: 6B, RX: 892M) [--] Reads / Writes: 68% / 32% [--] Total buffers: 19.7G global + 35.2M per thread (275 max threads) [!!] Maximum possible memory usage: 29.1G (93% of installed RAM) [OK] Slow queries: 0% (472/8M) [OK] Highest usage of available connections: 66% (183/275) [OK] Key buffer size / total MyISAM indexes: 384.0M/91.0K [OK] Key buffer hit rate: 100.0% (173 cached / 0 reads) [OK] Query cache efficiency: 96.2% (7M cached / 7M selects) [!!] Query cache prunes per day: 553614 [OK] Sorts requiring temporary tables: 0% (3 temp sorts / 1K sorts) [!!] Temporary tables created on disk: 49% (3K on disk / 7K total) [OK] Thread cache hit rate: 74% (183 created / 705 connections) [OK] Table cache hit rate: 97% (231 open / 238 opened) [OK] Open file limit used: 0% (17/8K) [OK] Table locks acquired immediately: 100% (432K immediate / 432K locks) [OK] InnoDB data size / buffer pool: 420.9M/18.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Reduce your overall MySQL memory footprint for system stability Increasing the query_cache size over 128M may reduce performance Temporary table size is already large - reduce result set size Reduce your SELECT DISTINCT queries without LIMIT clauses Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 256M) [see warning above] Thanks in advanced for your help!

  Read the article

• mySQL Optimization Suggestions

  - by Brian Schroeter

  I'm trying to optimize our mySQL configuration for our large Magento website. The reason I believe that mySQL needs to be configured further is because New Relic has shown that our SELECT queries are taking a long time (20,000+ ms) in some categories. I ran MySQLTuner 1.3.0 and got the following results... (Disclaimer: I restarted mySQL earlier after tweaking some settings, and so the results here may not be 100% accurate): >> MySQLTuner 1.3.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering [OK] Currently running supported MySQL version 5.5.37-35.0 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MRG_MYISAM [--] Data in MyISAM tables: 7G (Tables: 332) [--] Data in InnoDB tables: 213G (Tables: 8714) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [--] Data in MEMORY tables: 0B (Tables: 353) [!!] Total fragmented tables: 5492 -------- Security Recommendations ------------------------------------------- [!!] User '@host5.server1.autopartsnetwork.com' has no password set. [!!] User '@localhost' has no password set. [!!] User 'root@%' has no password set. -------- Performance Metrics ------------------------------------------------- [--] Up for: 5h 3m 4s (5M q [317.443 qps], 42K conn, TX: 18B, RX: 2B) [--] Reads / Writes: 95% / 5% [--] Total buffers: 35.5G global + 184.5M per thread (1024 max threads) [!!] Maximum possible memory usage: 220.0G (174% of installed RAM) [OK] Slow queries: 0% (6K/5M) [OK] Highest usage of available connections: 5% (61/1024) [OK] Key buffer size / total MyISAM indexes: 512.0M/3.1G [OK] Key buffer hit rate: 100.0% (102M cached / 45K reads) [OK] Query cache efficiency: 66.9% (3M cached / 5M selects) [!!] Query cache prunes per day: 3486361 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 812K sorts) [!!] Joins performed without indexes: 1328 [OK] Temporary tables created on disk: 11% (126K on disk / 1M total) [OK] Thread cache hit rate: 99% (61 created / 42K connections) [!!] Table cache hit rate: 19% (9K open / 49K opened) [OK] Open file limit used: 2% (712/25K) [OK] Table locks acquired immediately: 100% (5M immediate / 5M locks) [!!] InnoDB buffer pool / data size: 32.0G/213.4G [OK] InnoDB log waits: 0 -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increasing the query_cache size over 128M may reduce performance Adjust your join queries to always utilize indexes Increase table_cache gradually to avoid file descriptor limits Read this before increasing table_cache over 64: http://bit.ly/1mi7c4C Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 512M) [see warning above] join_buffer_size (> 128.0M, or always use indexes with joins) table_cache (> 12288) innodb_buffer_pool_size (>= 213G) My my.cnf configuration is as follows... [client] port = 3306 [mysqld_safe] nice = 0 [mysqld] tmpdir = /var/lib/mysql/tmp user = mysql port = 3306 skip-external-locking character-set-server = utf8 collation-server = utf8_general_ci event_scheduler = 0 key_buffer = 512M max_allowed_packet = 64M thread_stack = 512K thread_cache_size = 512 sort_buffer_size = 24M read_buffer_size = 8M read_rnd_buffer_size = 24M join_buffer_size = 128M # for some nightly processes client sessions set the join buffer to 8 GB auto-increment-increment = 1 auto-increment-offset = 1 myisam-recover = BACKUP max_connections = 1024 # max connect errors artificially high to support behaviors of NetScaler monitors max_connect_errors = 999999 concurrent_insert = 2 connect_timeout = 5 wait_timeout = 180 net_read_timeout = 120 net_write_timeout = 120 back_log = 128 # this table_open_cache might be too low because of MySQL bugs #16244691 and #65384) table_open_cache = 12288 tmp_table_size = 512M max_heap_table_size = 512M bulk_insert_buffer_size = 512M open-files-limit = 8192 open-files = 1024 query_cache_type = 1 # large query limit supports SOAP and REST API integrations query_cache_limit = 4M # larger than 512 MB query cache size is problematic; this is typically ~60% full query_cache_size = 512M # set to true on read slaves read_only = false slow_query_log_file = /var/log/mysql/slow.log slow_query_log = 0 long_query_time = 0.2 expire_logs_days = 10 max_binlog_size = 1024M binlog_cache_size = 32K sync_binlog = 0 # SSD RAID10 technically has a write capacity of 10000 IOPS innodb_io_capacity = 400 innodb_file_per_table innodb_table_locks = true innodb_lock_wait_timeout = 30 # These servers have 80 CPU threads; match 1:1 innodb_thread_concurrency = 48 innodb_commit_concurrency = 2 innodb_support_xa = true innodb_buffer_pool_size = 32G innodb_file_per_table innodb_flush_log_at_trx_commit = 1 innodb_log_buffer_size = 2G skip-federated [mysqldump] quick quote-names single-transaction max_allowed_packet = 64M I have a monster of a server here to power our site because our catalog is very large (300,000 simple SKUs), and I'm just wondering if I'm missing anything that I can configure further. :-) Thanks!

  Read the article

• Lockdown users on Windows Server 2012

  - by el.severo

  I set up a Active Directory on a server machine with Windows Server 2012 and I'd like to create some users with limitations like Windows Steady State does in Windows XP (locally). Seen already the Windows SteadyState Handbook (with Windows Server 2008), but I'd like to know if anyone has tried this before, the limitations are the following: 1. Prevent locked or roaming user profiles that cannot be found on the computer from logging on 2. Do not cache copies of locked or roaming user profiles for users who have previously logged on to this computer 3. Do not allow Windows to compute and store passwords using LAN Manager Hash values 4. Do not store usernames or passwords used to log on to the Windows Live ID or the domain 5. Prevent users from creating folders and files on drive C:\ 6. Lock profile to prevent the user from making permanent changes 7. Remove the Control Panel, Printer and Network Settings from the Classic Start menu 8. Remove the Favorites icon 9. Remove the My Network Places icon 10. Remove the Frequently Used Program list 11. Remove the Shared documents folder from My Computer 12. Remove control Panel icon 13. Remove the Set Program Access and Defaults icon 14. Remove the Network Connection(Connect To)icon 15. Remove the Printers and Faxes icon 16. Remove the Run icon 17. Prevent access to Windows Explorer features: Folder Options, Customize Toolbar, and the Notification Area 18. Prevent access to the taskbar 19. Prevent access to the command prompt 20. Prevent access to the registry editor 21. Prevent access to the Task Manager 22. Prevent access to Microsoft Management Console utilities 23. Prevent users from adding or removing printers 24. Prevent users from locking the computer 25. Prevent password changes (also requires the Control Panel icon to be removed) 26. Disable System Tools and other management programs 27. Prevent users from saving files to the desktop 28. Hide A Drive 29. Hide B Drive 30. Hide C Drive 31. Prevent changes to Internet Explorer registry settings 32. Empty the Temporary Internet Files folder when Internet Explorer is closed 33. Remove Internet Options 34. Remove General tab in Internet Options 35. Remove Security tab in Internet Options 36. Remove Privacy tab in Internet Options 37. Remove Content tab in Internet Options 38. Remove Connections tab in Internet Options 39. Remove Programs tab in Internet Options 40. Remove Advanced tab in Internet Options 41. Set a home page (Internet Explorer) 42. Restrict the possibility to change desktop image 43. Restrict the possibility to change wallpaper 44. Restrict usb flash drives Any suggestions for this? UPDATE: As @Dan suggested me I'd like to specify that would be applied to a educational scenario where students can login from a computer and want to add some restrictions to them.

  Read the article

• Hard drive write speed - finding a lighter antivirus?

  - by Shingetsu

  I recently have been getting a lot of system lag here (for example, the mouse and the display in general take about 15 seconds to react in the worst cases). After a lot of monitoring the resources, I found that the problem mainly happens when too much Disk I/O is being done. Three culprits have been identified: My browser had the highest write I/O with 35,000,000 I/O Write Bytes. Steam had the highest read I/O (when IDLE!!!) with 106,000,000 I/O Read Bytes. My antivirus (in both cases I will soon mention) was the runner up in both cases with: 30,000,000ish write and 80,000,000ish read. The first AV I had was Avast! which I had liked on my previous system. After noticing it taking so much I/O I switched to Panda (supposing it wouldn't use TOO much during idle phase). However it only used a bit less I/O. Just a lot less memory and cpu and somewhat more network. My browser at the moment is Maxthon 3 (which I like a lot). Before this I was running chrome which had similar data and much higher cpu when running in the background was enabled. I'm not going to be running steam all the time and there aren't many alternatives to it. I like my browser very much, but I AM willing to switch if there's an obvious problem (I'm in programming, however I'm not a very good sysadmin, especially not when it comes to windows). Finally, my system almost stops lagging when I turn off the antivirus (and preferably steam) (some remains but once in every 5-6 hours for a few seconds so it isn't a big problem). My question (has a few parts): Is it possible to configure steam to lower it's I/O usage? (and maybe network while we're at it?) Which antivirus (very preferably free) uses lowest I/O while idle (I leave PC alone during active scans so that isn't a problem). Is there an obvious problem with my current browser and, if so, is there a way to fix it or should I switch and, if so, to what? (P.S. I've been on FFox for some time too). Info on system: Windows 7 (32 bit T_T, I am getting a new one in a few months but I want to keep using system during that time though). Hard Drive (main) is a Raid0. (Also have an external 1TB one which contains steam (and steam alone). As such it doesn't get used by much anything other than steam and isn't a very large problem. However steam still uses some I/O of registry) CPU: Intel(R) Core(TM)2 CPU [email protected] RAM: 6GB (3.25GB usable) (this and CPU have little effect as shown in next section) Additional info: Memory usage during problematic times: 44% CPU usage during problematic times: 35% Page File: main drive: system managed. 1TB drive: none. The current system I'm using is about 6 years old and is mainly a place holder while I await the new one in a few months. Final words: this is my 1st post on Super User (this question wouldn't feel right on Stack Overflow where I usually stay). If it doesn't have it's place here please tell me. If anything is wrong with it, same. Edit Technically I'm looking for a live thread detection program with minimal IO usage. I already have good active scan capability: Kaspersky (the free scanner uses the paid database) and MalwareBytes. Edit 2 Noticed another one, it seems that windows media player has been using stuff even when off! Turning it off and restarting now. If the problem is fixed I'll tell you guys. The reason I didn't notice it before was because I didn't have resource manager in front of me at the MOMENT of the problem. Now I did and it was at the very top of the list!

  Read the article

• Connecting PC to TV via HDMI/DVI: Windows XP doesn't allow the appropriate screen resolution

  - by Jørgen

  I have a computer that is connected to the living room TV (a Panasonic) via HDMI. There is no other monitor connected. My problem is that the computer, which is running Windows XP, does not allow me to set the proper resolution for the TV. Both the graphics adapter and the TV should support the 1280x720 resolution, but it cannot be selected - the only available options are 1280x600 and 800x600, both in the "native" Windows dialog box and the custom Intel graphics options dialog box. Do anyone have a suggestion for a solution for this? Things I've thought of: Setting the resolution directly in the registry (where?) Installing some "custom" monitor driver (the TV manufacturer does not appear to provide any, currently the "generic" one is used) Details on the setup: Connection: DVI output on the computer via a passive DVI-HDMI adapter to the HDMI input on the TV, audio is run on a separate link, the TV is able to combine video and audio without any problem, the problem is there regardless of whether or not the audio is connected. The connection is several meters long through some walls, for this reason using a VGA cable instead is not an option. Note that the report explicitly says that the TV supports 1280x720. Still, I am not allowed to select it in Graphics Options, only 1280x600 and 800x600 is available. For 800x600, there's a lot of black around the edges; for 1280x600, the screen is "zoomed" so the edges of the monitor image (like the taskbar) is not visible. Other: The computer is running Windows XP. More recent versions of Windows are not an option (I have no licence). Linux is probably not an option (some of the video streaming sites I plan to use do not support it, I think) I wrote the rest of the details below. Thanks for any help!! TV: Panasonic TX-L32X10Y, European version; a 720p 32" quite "regular" LCD TV. Allowed resolutions according to manual: Signal name: 640x480 @60HZ Horizontal frequency: 31.47 kHz Vertical frequency: 60Hz Signal name: 750/720) /60p Horizontal frequency: 45.00 kHz Vertical frequency: 60Hz Signal name: 1,125 (1,080) / 60p Horizontal frequency: 67.50 kHz Vertical frequency: 60Hz (this is exactly how the manual presents it. PC via D-SUB (VGA cable) and "regular" HDMI have more alternatives.) Messing with the "zoom" settings on the TV does not affect the available resolution options on the computer. Computer: The following is a printout from one of the graphics adapter option pages. I think it covers most of it. The computer is a Dell. INTEL(R) EXTREME GRAPHICS 2 REPORT Report Date: 04/17/2011 Report Time[hr:mm:ss]: 20:18:02 Driver Version: 6.14.10.4396 Operating System: Windows XP* Professional, Service Pack 3 (5.1.2600) Default Language: English DirectX* Version: 9.0 Physical Memory: 1021 MB Minimum Graphics Memory: 1 MB Maximum Graphics Memory: 96 MB Graphics Memory in Use: 6 MB Processor: x86 Processor Speed: 2593 MHZ Vendor ID: 8086 Device ID: 2572 Device Revision: 02 * Accelerator Information * Accelerator in Use: Intel(R) 82865G Graphics Controller Video BIOS: 2972 Current Graphics Mode: 1280 by 600 True Color (60 Hz) * Devices Connected to the Graphics Accelerator * Active Digital Displays: 1 * Digital Display * Monitor Name: Plug and Play Monitor Display Type: Digital Gamma Value: 2.20 DDC2 Protocol: Supported Maximum Image Size: Horizontal: Not Available Vertical: Not Available Monitor Supported Modes: 1280 by 720 (50 Hz) 1280 by 720 (60 Hz) Display Power Management Support: Standby Mode: Not Supported Suspend Mode: Not Supported Active Off Mode: Not Supported (disclaimer: this question was also asked at the Wikipedia Reference Desk some time ago and might show up in a Google search. I got no useful answers there.)

  Read the article

• The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

  - by Rick Strahl

  I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot easier with the introduction of dynamic type support in .NET. One of the biggest problems with COM interop has been that it’s been really difficult to pass dynamic objects from FoxPro to .NET and get them properly typed. The only way that any strong typing can occur in .NET for FoxPro components is via COM type library exports of Visual FoxPro components. Due to limitations in Visual FoxPro’s type library support as well as the dynamic nature of the Visual FoxPro language where few things are or can be described in the form of a COM type library, a lot of useful interaction between FoxPro and .NET required the use of messy Reflection code in .NET. Reflection is .NET’s base interface to runtime type discovery and dynamic execution of code without requiring strong typing. In FoxPro terms it’s similar to EVALUATE() functionality albeit with a much more complex API and corresponiding syntax. The Reflection APIs are fairly powerful, but they are rather awkward to use and require a lot of code. Even with the creation of wrapper utility classes for common EVAL() style Reflection functionality dynamically access COM objects passed to .NET often is pretty tedious and ugly. Let’s look at a simple example. In the following code I use some FoxPro code to dynamically create an object in code and then pass this object to .NET. An alternative to this might also be to create a new object on the fly by using SCATTER NAME on a database record. How the object is created is inconsequential, other than the fact that it’s not defined as a COM object – it’s a pure FoxPro object that is passed to .NET. Here’s the code: *** Create .NET COM InstanceloNet = CREATEOBJECT('DotNetCom.DotNetComPublisher') *** Create a Customer Object Instance (factory method) loCustomer = GetCustomer() loCustomer.Name = "Rick Strahl" loCustomer.Company = "West Wind Technologies" loCustomer.creditLimit = 9999999999.99 loCustomer.Address.StreetAddress = "32 Kaiea Place" loCustomer.Address.Phone = "808 579-8342" loCustomer.Address.Email = "[email protected]" *** Pass Fox Object and echo back values ? loNet.PassRecordObject(loObject) RETURN FUNCTION GetCustomer LOCAL loCustomer, loAddress loCustomer = CREATEOBJECT("EMPTY") ADDPROPERTY(loCustomer,"Name","") ADDPROPERTY(loCustomer,"Company","") ADDPROPERTY(loCUstomer,"CreditLimit",0.00) ADDPROPERTY(loCustomer,"Entered",DATETIME()) loAddress = CREATEOBJECT("Empty") ADDPROPERTY(loAddress,"StreetAddress","") ADDPROPERTY(loAddress,"Phone","") ADDPROPERTY(loAddress,"Email","") ADDPROPERTY(loCustomer,"Address",loAddress) RETURN loCustomer ENDFUNC Now prior to .NET 4.0 you’d have to access this object passed to .NET via Reflection and the method code to do this would looks something like this in the .NET component: public string PassRecordObject(object FoxObject) { // *** using raw Reflection string Company = (string) FoxObject.GetType().InvokeMember( "Company", BindingFlags.GetProperty,null, FoxObject,null); // using the easier ComUtils wrappers string Name = (string) ComUtils.GetProperty(FoxObject,"Name"); // Getting Address object – then getting child properties object Address = ComUtils.GetProperty(FoxObject,"Address");    string Street = (string) ComUtils.GetProperty(FoxObject,"StreetAddress"); // using ComUtils 'Ex' functions you can use . Syntax     string StreetAddress = (string) ComUtils.GetPropertyEx(FoxObject,"AddressStreetAddress"); return Name + Environment.NewLine + Company + Environment.NewLine + StreetAddress + Environment.NewLine + " FOX"; } Note that the FoxObject is passed in as type object which has no specific type. Since the object doesn’t exist in .NET as a type signature the object is passed without any specific type information as plain non-descript object. To retrieve a property the Reflection APIs like Type.InvokeMember or Type.GetProperty().GetValue() etc. need to be used. I made this code a little simpler by using the Reflection Wrappers I mentioned earlier but even with those ComUtils calls the code is pretty ugly requiring passing the objects for each call and casting each element. Using .NET 4.0 Dynamic Typing makes this Code a lot cleaner Enter .NET 4.0 and the dynamic type. Replacing the input parameter to the .NET method from type object to dynamic makes the code to access the FoxPro component inside of .NET much more natural: public string PassRecordObjectDynamic(dynamic FoxObject) { // *** using raw Reflection string Company = FoxObject.Company; // *** using the easier ComUtils class string Name = FoxObject.Name; // *** using ComUtils 'ex' functions to use . Syntax string Address = FoxObject.Address.StreetAddress; return Name + Environment.NewLine + Company + Environment.NewLine + Address + Environment.NewLine + " FOX"; } As you can see the parameter is of type dynamic which as the name implies performs Reflection lookups and evaluation on the fly so all the Reflection code in the last example goes away. The code can use regular object ‘.’ syntax to reference each of the members of the object. You can access properties and call methods this way using natural object language. Also note that all the type casts that were required in the Reflection code go away – dynamic types like var can infer the type to cast to based on the target assignment. As long as the type can be inferred by the compiler at compile time (ie. the left side of the expression is strongly typed) no explicit casts are required. Note that although you get to use plain object syntax in the code above you don’t get Intellisense in Visual Studio because the type is dynamic and thus has no hard type definition in .NET . The above example calls a .NET Component from VFP, but it also works the other way around. Another frequent scenario is an .NET code calling into a FoxPro COM object that returns a dynamic result. Assume you have a FoxPro COM object returns a FoxPro Cursor Record as an object: DEFINE CLASS FoxData AS SESSION OlePublic cAppStartPath = "" FUNCTION INIT THIS.cAppStartPath = ADDBS( JustPath(Application.ServerName) ) SET PATH TO ( THIS.cAppStartpath ) ENDFUNC FUNCTION GetRecord(lnPk) LOCAL loCustomer SELECT * FROM tt_Cust WHERE pk = lnPk ; INTO CURSOR TCustomer IF _TALLY < 1 RETURN NULL ENDIF SCATTER NAME loCustomer MEMO RETURN loCustomer ENDFUNC ENDDEFINE If you call this from a .NET application you can now retrieve this data via COM Interop and cast the result as dynamic to simplify the data access of the dynamic FoxPro type that was created on the fly: int pk = 0; int.TryParse(Request.QueryString["id"],out pk); // Create Fox COM Object with Com Callable Wrapper FoxData foxData = new FoxData(); dynamic foxRecord = foxData.GetRecord(pk); string company = foxRecord.Company; DateTime entered = foxRecord.Entered; This code looks simple and natural as it should be – heck you could write code like this in days long gone by in scripting languages like ASP classic for example. Compared to the Reflection code that previously was necessary to run similar code this is much easier to write, understand and maintain. For COM interop and Visual FoxPro operation dynamic type support in .NET 4.0 is a huge improvement and certainly makes it much easier to deal with FoxPro code that calls into .NET. Regardless of whether you’re using COM for calling Visual FoxPro objects from .NET (ASP.NET calling a COM component and getting a dynamic result returned) or whether FoxPro code is calling into a .NET COM component from a FoxPro desktop application. At one point or another FoxPro likely ends up passing complex dynamic data to .NET and for this the dynamic typing makes coding much cleaner and more readable without having to create custom Reflection wrappers. As a bonus the dynamic runtime that underlies the dynamic type is fairly efficient in terms of making Reflection calls especially if members are repeatedly accessed. © Rick Strahl, West Wind Technologies, 2005-2010Posted in COM  FoxPro  .NET  CSharp  

  Read the article

• How to remove MySQL completely with config and library files on ubuntu 12.04 gnome 3.0

  - by codeartist

  I tried everything till now: sudo apt-get remove mysql-server mysql-client mysql-common sudo apt-get purge mysql-server mysql-client mysql-common sudo apt-get autoremove and even more commands... But whenever I am trying to locate mysql. I get a no. of files related to mysql command: shell>> locate mysql Output: /etc/mysql /etc/apparmor.d/usr.sbin.mysqld /etc/apparmor.d/abstractions/mysql /etc/apparmor.d/cache/usr.sbin.mysqld /etc/apparmor.d/cache/usr.sbin.mysqld-akonadi /etc/apparmor.d/local/usr.sbin.mysqld /etc/bash_completion.d/mysqladmin /etc/init/mysql.conf /etc/logcheck/ignore.d.paranoid/mysql-server-5_5 /etc/logcheck/ignore.d.server/mysql-server-5_5 /etc/logcheck/ignore.d.workstation/mysql-server-5_5 /etc/logrotate.d/mysql-server /etc/mysql/conf.d /etc/mysql/debian-start /etc/mysql/debian.cnf /etc/mysql/conf.d/mysqld_safe_syslog.cnf /home/pkr/.mysql_history /home/pkr/.cache/software-center/piston-helper/rec.ubuntu.com,api,1.0,recommend_app,libqt4-sql-mysql,,349051c3a57da571aa832adb39177aff /home/pkr/.cache/software-center/piston-helper/rec.ubuntu.com,api,1.0,recommend_app,mysql-client,,cbf77a486cdc80547317981a33144427 /home/pkr/.cache/software-center/piston-helper/rec.ubuntu.com,api,1.0,recommend_app,mysql-client,,de8220dee4d957a9502caa79e8d2fdda /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,any,any,any,libqt4-sql-mysql,page,1,helpful,,17fb2e657321dc51526ee8fe9928da30 /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,any,any,any,mysql-client,page,1,helpful,,a4c1b6e8200f36ab5745c6f81f14da0a /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,ubuntu,oneiric,any,libqt4-sql-mysql,page,1,helpful,,c54295fb82b8183350cd34f22c3547ef /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,ubuntu,oneiric,any,mysql-client,page,1,helpful,,fcf201c1abff3f774af89173a84de2cc /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,ubuntu,precise,any,libqt4-sql-mysql,page,1,helpful,,0cd86648584efeccfb16119012f89540 /home/pkr/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,ubuntu,precise,any,mysql-client,page,1,helpful,,eb84724e9da7851ff8862a227d8bac59 /home/pkr/.local/share/akonadi/mysql.conf /home/pkr/.local/share/akonadi/db_data/mysql /home/pkr/.local/share/akonadi/db_data/mysql.err /home/pkr/.local/share/akonadi/db_data/mysql.err.old /home/pkr/.local/share/akonadi/db_data/mysql/columns_priv.MYD /home/pkr/.local/share/akonadi/db_data/mysql/columns_priv.MYI /home/pkr/.local/share/akonadi/db_data/mysql/columns_priv.frm /home/pkr/.local/share/akonadi/db_data/mysql/db.MYD /home/pkr/.local/share/akonadi/db_data/mysql/db.MYI /home/pkr/.local/share/akonadi/db_data/mysql/db.frm /home/pkr/.local/share/akonadi/db_data/mysql/event.MYD /home/pkr/.local/share/akonadi/db_data/mysql/event.MYI /home/pkr/.local/share/akonadi/db_data/mysql/event.frm /home/pkr/.local/share/akonadi/db_data/mysql/func.MYD /home/pkr/.local/share/akonadi/db_data/mysql/func.MYI /home/pkr/.local/share/akonadi/db_data/mysql/func.frm /home/pkr/.local/share/akonadi/db_data/mysql/general_log.CSM /home/pkr/.local/share/akonadi/db_data/mysql/general_log.CSV /home/pkr/.local/share/akonadi/db_data/mysql/general_log.frm /home/pkr/.local/share/akonadi/db_data/mysql/help_category.MYD /home/pkr/.local/share/akonadi/db_data/mysql/help_category.MYI /home/pkr/.local/share/akonadi/db_data/mysql/help_category.frm /home/pkr/.local/share/akonadi/db_data/mysql/help_keyword.MYD /home/pkr/.local/share/akonadi/db_data/mysql/help_keyword.MYI /home/pkr/.local/share/akonadi/db_data/mysql/help_keyword.frm /home/pkr/.local/share/akonadi/db_data/mysql/help_relation.MYD /home/pkr/.local/share/akonadi/db_data/mysql/help_relation.MYI /home/pkr/.local/share/akonadi/db_data/mysql/help_relation.frm /home/pkr/.local/share/akonadi/db_data/mysql/help_topic.MYD /home/pkr/.local/share/akonadi/db_data/mysql/help_topic.MYI /home/pkr/.local/share/akonadi/db_data/mysql/help_topic.frm /home/pkr/.local/share/akonadi/db_data/mysql/host.MYD /home/pkr/.local/share/akonadi/db_data/mysql/host.MYI /home/pkr/.local/share/akonadi/db_data/mysql/host.frm /home/pkr/.local/share/akonadi/db_data/mysql/ndb_binlog_index.MYD /home/pkr/.local/share/akonadi/db_data/mysql/ndb_binlog_index.MYI /home/pkr/.local/share/akonadi/db_data/mysql/ndb_binlog_index.frm /home/pkr/.local/share/akonadi/db_data/mysql/plugin.MYD /home/pkr/.local/share/akonadi/db_data/mysql/plugin.MYI /home/pkr/.local/share/akonadi/db_data/mysql/plugin.frm /home/pkr/.local/share/akonadi/db_data/mysql/proc.MYD /home/pkr/.local/share/akonadi/db_data/mysql/proc.MYI /home/pkr/.local/share/akonadi/db_data/mysql/proc.frm /home/pkr/.local/share/akonadi/db_data/mysql/procs_priv.MYD /home/pkr/.local/share/akonadi/db_data/mysql/procs_priv.MYI /home/pkr/.local/share/akonadi/db_data/mysql/procs_priv.frm /home/pkr/.local/share/akonadi/db_data/mysql/proxies_priv.MYD /home/pkr/.local/share/akonadi/db_data/mysql/proxies_priv.MYI /home/pkr/.local/share/akonadi/db_data/mysql/proxies_priv.frm /home/pkr/.local/share/akonadi/db_data/mysql/servers.MYD /home/pkr/.local/share/akonadi/db_data/mysql/servers.MYI /home/pkr/.local/share/akonadi/db_data/mysql/servers.frm /home/pkr/.local/share/akonadi/db_data/mysql/slow_log.CSM /home/pkr/.local/share/akonadi/db_data/mysql/slow_log.CSV /home/pkr/.local/share/akonadi/db_data/mysql/slow_log.frm /home/pkr/.local/share/akonadi/db_data/mysql/tables_priv.MYD /home/pkr/.local/share/akonadi/db_data/mysql/tables_priv.MYI /home/pkr/.local/share/akonadi/db_data/mysql/tables_priv.frm /home/pkr/.local/share/akonadi/db_data/mysql/time_zone.MYD /home/pkr/.local/share/akonadi/db_data/mysql/time_zone.MYI /home/pkr/.local/share/akonadi/db_data/mysql/time_zone.frm /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_leap_second.MYD /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_leap_second.MYI /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_leap_second.frm /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_name.MYD /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_name.MYI /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_name.frm /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition.MYD /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition.MYI /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition.frm /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition_type.MYD /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition_type.MYI /home/pkr/.local/share/akonadi/db_data/mysql/time_zone_transition_type.frm /home/pkr/.local/share/akonadi/db_data/mysql/user.MYD /home/pkr/.local/share/akonadi/db_data/mysql/user.MYI /home/pkr/.local/share/akonadi/db_data/mysql/user.frm /usr/bin/mysql /usr/bin/mysql_install_db /usr/bin/mysql_upgrade /usr/bin/mysqlcheck /usr/sbin/mysqld /usr/share/mysql /usr/share/app-install/desktop/gmysqlcc:gmysqlcc.desktop /usr/share/app-install/desktop/mysql-client.desktop /usr/share/app-install/desktop/mysql-navigator:mysql-navigator.desktop /usr/share/app-install/desktop/mysql-server.desktop /usr/share/app-install/icons/gmysqlcc-32.png /usr/share/app-install/icons/mysql-navigator.png /usr/share/doc/mysql-client-core-5.5 /usr/share/doc/mysql-server-core-5.5 /usr/share/kde4/apps/katepart/syntax/sql-mysql.xml /usr/share/man/man1/mysql.1.gz /usr/share/man/man1/mysql_install_db.1.gz /usr/share/man/man1/mysql_upgrade.1.gz /usr/share/man/man1/mysqlcheck.1.gz /usr/share/man/man8/mysqld.8.gz /var/cache/apt/archives/akonadi-backend-mysql_1.7.2-0ubuntu1_all.deb /var/cache/apt/archives/libmysqlclient-dev_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/libmysqlclient18_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/libqt4-sql-mysql_4%3a4.8.1-0ubuntu4.1_i386.deb /var/cache/apt/archives/mysql-client-5.5_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/mysql-client-core-5.5_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/mysql-client_5.5.22-0ubuntu1_all.deb /var/cache/apt/archives/mysql-common_5.5.22-0ubuntu1_all.deb /var/cache/apt/archives/mysql-server-5.5_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/mysql-server-core-5.5_5.5.22-0ubuntu1_i386.deb /var/cache/apt/archives/mysql-server_5.5.22-0ubuntu1_all.deb /var/lib/dpkg/info/mysql-client-core-5.5.list /var/lib/dpkg/info/mysql-client-core-5.5.md5sums /var/lib/dpkg/info/mysql-server-5.5.list /var/lib/dpkg/info/mysql-server-5.5.postrm /var/lib/dpkg/info/mysql-server-core-5.5.list /var/lib/dpkg/info/mysql-server-core-5.5.md5sums /var/log/mysql /var/log/mysql.err /var/log/mysql.log /var/log/mysql.log.1.gz /var/log/mysql.log.2.gz /var/log/mysql.log.3.gz /var/log/mysql.log.4.gz /var/log/mysql.log.5.gz /var/log/mysql.log.6.gz /var/log/mysql.log.7.gz /var/log/upstart/mysql.log.1.gz /var/log/upstart/mysql.log.2.gz /var/log/upstart/mysql.log.3.gz /var/log/upstart/mysql.log.4.gz /var/log/upstart/mysql.log.5.gz /var/log/upstart/mysql.log.6.gz /var/log/upstart/mysql.log.7.gz What should I do now? Please help me out in this :( I was trying to find out if there is any way I can remove mysql related every file and then reinstall mysql. I need it for Qt connectivity. I don't understand what to do! Please help :(

  Read the article

• I have finally traded my Blackberry in for a Droid!

  - by Bob Porter

  Over the years I have used a number of different types of phones. Windows Mobile, Blackberry, Nokia, and now Android. Until the Blackberry, which was my last phone (and I still have one issued from my office) I had never found a phone that “just worked” especially with email and messaging. The Blackberry did, and does, excel at those functions. My last personal phone was a Storm 1 which was Blackberry’s first touch screen phone. The Storm 2 was an improved version that fixed some screen press detection issues from the first model and it added Wifi. Over the last few years I have watched others acquire and fall in love with their ‘Droid’s including a number of iPhone users which surprised me. Our office has until recently only supported Blackberry phones, adding iPhones within the last year or so. When I spoke with our internal telecom folks they confirmed they were evaluating Android phones, but felt they still were not secure enough out of the box for corporate use and SOX compliance. That being said, as a personal phone, the Droid Rocks! I am impressed with its speed, the number of apps available, and the overall design. It is not as “flashy” as an iPhone but it does everything that I care about and more. The model I bought is the Motorola Droid 2 Global from Verizon. It is currently running Android 2.2 for it’s OS, 2.3 is just around the corner. It has 8 gigs of internal flash memory and can handle up to a 32 gig SDCard. (I currently have 2 8 gig cards, one for backups, and have ordered a 16 gig card!) Being a geek at heart, I “rooted” the phone which means gained superuser access to the OS on the phone. And opens a number of doors for further modifications down the road. Also being a geek meant I have already setup a development environment and built and deployed the obligatory “Hello Droid” application. I will be writing of my development experiences with this new platform here often, to start off I thought I would share my current application list to give you an idea what I am using. Zedge: http://market.android.com/details?id=net.zedge.android XDA: http://market.android.com/details?id=com.quoord.tapatalkxda.activity WRAL.com: http://market.android.com/details?id=com.mylocaltv.wral Wireless Tether: http://market.android.com/details?id=android.tether Winamp: http://market.android.com/details?id=com.nullsoft.winamp Win7 Clock: http://market.android.com/details?id=com.androidapps.widget.toggles.win7 Wifi Analyzer: http://market.android.com/details?id=com.farproc.wifi.analyzer WeatherBug: http://market.android.com/details?id=com.aws.android Weather Widget Forecast Addon: http://market.android.com/details?id=com.androidapps.weather.forecastaddon Weather & Toggle Widgets: http://market.android.com/details?id=com.androidapps.widget.weather2 Vlingo: http://market.android.com/details?id=com.vlingo.client VirtualTENHO-G: http://market.android.com/details?id=jp.bustercurry.virtualtenho_g Twitter: http://market.android.com/details?id=com.twitter.android TweetDeck: http://market.android.com/details?id=com.thedeck.android.app Tricorder: http://market.android.com/details?id=org.hermit.tricorder Titanium Backup PRO: http://market.android.com/details?id=com.keramidas.TitaniumBackupPro Titanium Backup: http://market.android.com/details?id=com.keramidas.TitaniumBackup Terminal Emulator: http://market.android.com/details?id=jackpal.androidterm Talking Tom Free: http://market.android.com/details?id=com.outfit7.talkingtom Stock Blue: http://market.android.com/details?id=org.adw.theme.stockblue ST: Red Alert Free: http://market.android.com/details?id=com.oldplanets.redalertwallpaper ST: Red Alert: http://market.android.com/details?id=com.oldplanets.redalertwallpaperplus Solitaire: http://market.android.com/details?id=com.kmagic.solitaire Skype: http://market.android.com/details?id=com.skype.raider Silent Time Lite: http://market.android.com/details?id=com.QuiteHypnotic.SilentTime ShopSavvy: http://market.android.com/details?id=com.biggu.shopsavvy Shopper: http://market.android.com/details?id=com.google.android.apps.shopper Shiny clock: http://market.android.com/details?id=com.androidapps.clock.shiny ShareMyApps: http://market.android.com/details?id=com.mattlary.shareMyApps Sense Glass ADW Theme: http://market.android.com/details?id=com.dtanquary.senseglassadwtheme ROM Manager: http://market.android.com/details?id=com.koushikdutta.rommanager Roboform Bookmarklet Installer: http://market.android.com/details?id=roboformBookmarkletInstaller.android.com RealCalc: http://market.android.com/details?id=uk.co.nickfines.RealCalc Package Buddy: http://market.android.com/details?id=com.psyrus.packagebuddy Overstock: http://market.android.com/details?id=com.overstock OMGPOP Toggle: http://market.android.com/details?id=com.androidapps.widget.toggle.omgpop OI File Manager: http://market.android.com/details?id=org.openintents.filemanager nook: http://market.android.com/details?id=bn.ereader MyAtlas-Google Maps Navigation ext: http://market.android.com/details?id=com.adaptdroid.navbookfree3 MSN Droid: http://market.android.com/details?id=msn.droid.im Matrix Live Wallpaper: http://market.android.com/details?id=com.jarodyv.livewallpaper.matrix LogMeIn: http://market.android.com/details?id=com.logmein.ignitionpro.android Liveshare: http://market.android.com/details?id=com.cooliris.app.liveshare Kobo: http://market.android.com/details?id=com.kobobooks.android Instant Heart Rate: http://market.android.com/details?id=si.modula.android.instantheartrate IMDb: http://market.android.com/details?id=com.imdb.mobile Home Plus Weather: http://market.android.com/details?id=com.androidapps.widget.skin.weather.homeplus Handcent SMS: http://market.android.com/details?id=com.handcent.nextsms H7C Clock: http://market.android.com/details?id=com.androidapps.widget.clock.skin.h7c GTasks: http://market.android.com/details?id=org.dayup.gtask GPS Status: http://market.android.com/details?id=com.eclipsim.gpsstatus2 Google Voice: http://market.android.com/details?id=com.google.android.apps.googlevoice Google Sky Map: http://market.android.com/details?id=com.google.android.stardroid Google Reader: http://market.android.com/details?id=com.google.android.apps.reader GoMarks: http://market.android.com/details?id=com.androappsdev.gomarks Goggles: http://market.android.com/details?id=com.google.android.apps.unveil Glossy Black Weather: http://market.android.com/details?id=com.androidapps.widget.weather.skin.glossyblack Fox News: http://market.android.com/details?id=com.foxnews.android Foursquare: http://market.android.com/details?id=com.joelapenna.foursquared FBReader: http://market.android.com/details?id=org.geometerplus.zlibrary.ui.android Fandango: http://market.android.com/details?id=com.fandango Facebook: http://market.android.com/details?id=com.facebook.katana Extensive Notes Pro: http://market.android.com/details?id=com.flufflydelusions.app.extensive_notes_donate Expense Manager: http://market.android.com/details?id=com.expensemanager Espresso UI (LightShow w/ Slide): http://market.android.com/details?id=com.jaguirre.slide.lightshow Engadget: http://market.android.com/details?id=com.aol.mobile.engadget Earth: http://market.android.com/details?id=com.google.earth Drudge: http://market.android.com/details?id=com.iavian.dreport Dropbox: http://market.android.com/details?id=com.dropbox.android DroidForums: http://market.android.com/details?id=com.quoord.tapatalkdrodiforums.activity DroidArmor ADW: http://market.android.com/details?id=mobi.addesigns.droidarmorADW Droid Weather Icons: http://market.android.com/details?id=com.androidapps.widget.weather.skins.white Droid 2 Bootstrapper: http://market.android.com/details?id=com.koushikdutta.droid2.bootstrap doubleTwist: http://market.android.com/details?id=com.doubleTwist.androidPlayer Documents To Go: http://market.android.com/details?id=com.dataviz.docstogo Digital Clock Widget: http://market.android.com/details?id=com.maize.digitalClock Desk Home: http://market.android.com/details?id=com.cowbellsoftware.deskdock Default Clock: http://market.android.com/details?id=com.androidapps.widget.clock.skins.defaultclock Daily Expense Manager: http://market.android.com/details?id=com.techahead.ExpenseManager ConnectBot: http://market.android.com/details?id=org.connectbot Colorized Weather Icons: http://market.android.com/details?id=com.androidapps.widget.weather.colorized Chrome to Phone: http://market.android.com/details?id=com.google.android.apps.chrometophone CardStar: http://market.android.com/details?id=com.cardstar.android Books: http://market.android.com/details?id=com.google.android.apps.books Black Ipad Toggle: http://market.android.com/details?id=com.androidapps.toggle.widget.skin.blackipad Black Glass ADW Theme: http://market.android.com/details?id=com.dtanquary.blackglassadwtheme Bing: http://market.android.com/details?id=com.microsoft.mobileexperiences.bing BeyondPod Unlock Key: http://market.android.com/details?id=mobi.beyondpod.unlockkey BeyondPod: http://market.android.com/details?id=mobi.beyondpod BeejiveIM: http://market.android.com/details?id=com.beejive.im Beautiful Widgets Animations Addon: http://market.android.com/details?id=com.levelup.bw.forecast Beautiful Widgets: http://market.android.com/details?id=com.levelup.beautifulwidgets Beautiful Live Weather: http://market.android.com/details?id=com.levelup.beautifullive BBC News: http://market.android.com/details?id=net.jimblackler.newswidget Barnacle Wifi Tether: http://market.android.com/details?id=net.szym.barnacle Barcode Scanner: http://market.android.com/details?id=com.google.zxing.client.android ASTRO SMB Module: http://market.android.com/details?id=com.metago.astro.smb ASTRO Pro: http://market.android.com/details?id=com.metago.astro.pro ASTRO Bluetooth Module: http://market.android.com/details?id=com.metago.astro.network.bluetooth ASTRO: http://market.android.com/details?id=com.metago.astro AppBrain App Market: http://market.android.com/details?id=com.appspot.swisscodemonkeys.apps App Drawer Icon Pack: http://market.android.com/details?id=com.adwtheme.appdrawericonpack androidVNC: http://market.android.com/details?id=android.androidVNC AndroidGuys: http://market.android.com/details?id=com.handmark.mpp.AndroidGuys Android System Info: http://market.android.com/details?id=com.electricsheep.asi AndFTP: http://market.android.com/details?id=lysesoft.andftp ADWTheme Red: http://market.android.com/details?id=adw.theme.red ADWLauncher EX: http://market.android.com/details?id=org.adwfreak.launcher ADW.Theme.One: http://market.android.com/details?id=org.adw.theme.one ADW.Faded theme: http://market.android.com/details?id=com.xrcore.adwtheme.faded ADW Gingerbread: http://market.android.com/details?id=me.robertburns.android.adwtheme.gingerbread Advanced Task Killer Free: http://market.android.com/details?id=com.rechild.advancedtaskkiller Adobe Reader: http://market.android.com/details?id=com.adobe.reader Adobe Flash Player 10.1: http://market.android.com/details?id=com.adobe.flashplayer Adobe AIR: http://market.android.com/details?id=com.adobe.air 3G Auto OnOff: http://market.android.com/details?id=com.yuantuo --- Generated by ShareMyApps http://market.android.com/details?id=com.mattlary.shareMyApps Sent from my Droid

  Read the article

• Why do I have to run aptitude update twice to install Ruby?

  - by Willie Wheeler

  Summary. I have a fresh EC2 Precise 64-bit instance (ami-82fa58eb). After launching the instance, I want to install ruby1.9.1 (among others). This doesn't work: aptitude update && apt-get -o Dpkg::Options::="--force-confnew" --force-yes -fuy dist-upgrade && aptitude install -y ruby1.9.1 ruby1.9.1-dev make as Aptitude can't find the Ruby package. But this works: aptitude update && aptitude update && apt-get -o Dpkg::Options::="--force-confnew" --force-yes -fuy dist-upgrade && aptitude install -y ruby1.9.1 ruby1.9.1-dev make I would like to understand why I need to run aptitude update twice. Details. The first and second runs look pretty different. First run: Ign http://security.ubuntu.com precise-security InRelease Ign http://archive.ubuntu.com precise InRelease Get: 1 http://security.ubuntu.com precise-security Release.gpg [198 B] Ign http://archive.ubuntu.com precise-updates InRelease Get: 2 http://security.ubuntu.com precise-security Release [49.6 kB] Hit http://archive.ubuntu.com precise Release.gpg Get: 3 http://archive.ubuntu.com precise-updates Release.gpg [198 B] Hit http://archive.ubuntu.com precise Release Get: 4 http://security.ubuntu.com precise-security/main amd64 Packages [161 kB] Get: 5 http://archive.ubuntu.com precise-updates Release [49.6 kB] Get: 6 http://security.ubuntu.com precise-security/restricted amd64 Packages [3,969 B] Hit http://archive.ubuntu.com precise/main amd64 Packages Get: 7 http://security.ubuntu.com precise-security/universe amd64 Packages [43.8 kB] Hit http://archive.ubuntu.com precise/restricted amd64 Packages Hit http://archive.ubuntu.com precise/universe amd64 Packages Get: 8 http://security.ubuntu.com precise-security/multiverse amd64 Packages [2,180 B] Hit http://archive.ubuntu.com precise/multiverse amd64 Packages Get: 9 http://security.ubuntu.com precise-security/main i386 Packages [165 kB] Hit http://archive.ubuntu.com precise/main i386 Packages Hit http://archive.ubuntu.com precise/restricted i386 Packages Hit http://archive.ubuntu.com precise/universe i386 Packages Hit http://archive.ubuntu.com precise/multiverse i386 Packages Get: 10 http://security.ubuntu.com precise-security/restricted i386 Packages [3,968 B] Hit http://archive.ubuntu.com precise/main TranslationIndex Get: 11 http://security.ubuntu.com precise-security/universe i386 Packages [44.0 kB] Hit http://archive.ubuntu.com precise/multiverse TranslationIndex Get: 12 http://security.ubuntu.com precise-security/multiverse i386 Packages [2,369 B] Get: 13 http://security.ubuntu.com precise-security/main TranslationIndex [73 B] Hit http://archive.ubuntu.com precise/restricted TranslationIndex Get: 14 http://security.ubuntu.com precise-security/multiverse TranslationIndex [71 B] Hit http://archive.ubuntu.com precise/universe TranslationIndex Get: 15 http://security.ubuntu.com precise-security/restricted TranslationIndex [71 B] Get: 16 http://archive.ubuntu.com precise-updates/main amd64 Packages [382 kB] Get: 17 http://security.ubuntu.com precise-security/universe TranslationIndex [73 B] Get: 18 http://security.ubuntu.com precise-security/main Translation-en [76.5 kB] Get: 19 http://security.ubuntu.com precise-security/multiverse Translation-en [995 B] Get: 20 http://security.ubuntu.com precise-security/restricted Translation-en [978 B] Get: 21 http://security.ubuntu.com precise-security/universe Translation-en [27.2 kB] Get: 22 http://archive.ubuntu.com precise-updates/restricted amd64 Packages [6,755 B] Get: 23 http://archive.ubuntu.com precise-updates/universe amd64 Packages [129 kB] Get: 24 http://archive.ubuntu.com precise-updates/multiverse amd64 Packages [8,677 B] Get: 25 http://archive.ubuntu.com precise-updates/main i386 Packages [387 kB] Get: 26 http://archive.ubuntu.com precise-updates/restricted i386 Packages [6,732 B] Get: 27 http://archive.ubuntu.com precise-updates/universe i386 Packages [130 kB] Get: 28 http://archive.ubuntu.com precise-updates/multiverse i386 Packages [9,672 B] Get: 29 http://archive.ubuntu.com precise-updates/main TranslationIndex [3,564 B] Get: 30 http://archive.ubuntu.com precise-updates/multiverse TranslationIndex [2,605 B] Get: 31 http://archive.ubuntu.com precise-updates/restricted TranslationIndex [2,461 B] Get: 32 http://archive.ubuntu.com precise-updates/universe TranslationIndex [2,850 B] Get: 33 http://archive.ubuntu.com precise/main Translation-en [726 kB] Get: 34 http://archive.ubuntu.com precise/multiverse Translation-en [93.4 kB] Get: 35 http://archive.ubuntu.com precise/restricted Translation-en [2,395 B] Get: 36 http://archive.ubuntu.com precise/universe Translation-en [3,341 kB] Get: 37 http://archive.ubuntu.com precise-updates/main Translation-en [188 kB] Get: 38 http://archive.ubuntu.com precise-updates/multiverse Translation-en [5,414 B] Get: 39 http://archive.ubuntu.com precise-updates/restricted Translation-en [1,484 B] Get: 40 http://archive.ubuntu.com precise-updates/universe Translation-en [77.3 kB] Ign http://archive.ubuntu.com precise/main Translation-en_US Ign http://archive.ubuntu.com precise/multiverse Translation-en_US Ign http://archive.ubuntu.com precise/restricted Translation-en_US Ign http://archive.ubuntu.com precise/universe Translation-en_US Fetched 6,137 kB in 11s (538 kB/s) Reading package lists... Second run: Ign http://us-east-1.ec2.archive.ubuntu.com precise InRelease Ign http://us-east-1.ec2.archive.ubuntu.com precise-updates InRelease Get: 1 http://us-east-1.ec2.archive.ubuntu.com precise Release.gpg [198 B] Get: 2 http://us-east-1.ec2.archive.ubuntu.com precise-updates Release.gpg [198 B] Ign http://security.ubuntu.com precise-security InRelease Get: 3 http://us-east-1.ec2.archive.ubuntu.com precise Release [49.6 kB] Get: 4 http://us-east-1.ec2.archive.ubuntu.com precise-updates Release [49.6 kB] Get: 5 http://us-east-1.ec2.archive.ubuntu.com precise/main Sources [934 kB] Hit http://security.ubuntu.com precise-security Release.gpg Hit http://security.ubuntu.com precise-security Release Get: 6 http://us-east-1.ec2.archive.ubuntu.com precise/universe Sources [5,019 kB] Get: 7 http://security.ubuntu.com precise-security/main Sources [42.8 kB] Get: 8 http://security.ubuntu.com precise-security/universe Sources [13.5 kB] Hit http://security.ubuntu.com precise-security/main amd64 Packages Hit http://security.ubuntu.com precise-security/universe amd64 Packages Hit http://security.ubuntu.com precise-security/main i386 Packages Get: 9 http://us-east-1.ec2.archive.ubuntu.com precise/main amd64 Packages [1,273 kB] Hit http://security.ubuntu.com precise-security/universe i386 Packages Get: 10 http://us-east-1.ec2.archive.ubuntu.com precise/universe amd64 Packages [4,786 kB] Hit http://security.ubuntu.com precise-security/main TranslationIndex Hit http://security.ubuntu.com precise-security/universe TranslationIndex Hit http://security.ubuntu.com precise-security/main Translation-en Hit http://security.ubuntu.com precise-security/universe Translation-en Get: 11 http://us-east-1.ec2.archive.ubuntu.com precise/main i386 Packages [1,274 kB] Get: 12 http://us-east-1.ec2.archive.ubuntu.com precise/universe i386 Packages [4,796 kB] Get: 13 http://us-east-1.ec2.archive.ubuntu.com precise/main TranslationIndex [3,706 B] Get: 14 http://us-east-1.ec2.archive.ubuntu.com precise/universe TranslationIndex [2,922 B] Get: 15 http://us-east-1.ec2.archive.ubuntu.com precise-updates/main Sources [163 kB] Get: 16 http://us-east-1.ec2.archive.ubuntu.com precise-updates/universe Sources [50.8 kB] Get: 17 http://us-east-1.ec2.archive.ubuntu.com precise-updates/main amd64 Packages [382 kB] Get: 18 http://us-east-1.ec2.archive.ubuntu.com precise-updates/universe amd64 Packages [129 kB] Get: 19 http://us-east-1.ec2.archive.ubuntu.com precise-updates/main i386 Packages [387 kB] Get: 20 http://us-east-1.ec2.archive.ubuntu.com precise-updates/universe i386 Packages [129 kB] Get: 21 http://us-east-1.ec2.archive.ubuntu.com precise-updates/main TranslationIndex [3,564 B] Get: 22 http://us-east-1.ec2.archive.ubuntu.com precise-updates/universe TranslationIndex [2,850 B] Get: 23 http://us-east-1.ec2.archive.ubuntu.com precise/main Translation-en [726 kB] Get: 24 http://us-east-1.ec2.archive.ubuntu.com precise/universe Translation-en [3,341 kB] Get: 25 http://us-east-1.ec2.archive.ubuntu.com precise-updates/main Translation-en [188 kB] Get: 26 http://us-east-1.ec2.archive.ubuntu.com precise-updates/universe Translation-en [77.1 kB] Fetched 23.8 MB in 23s (1,026 kB/s) Reading package lists... Note. My question is almost exactly the same as Running 'apt-get upgrade' on Amazon EC2 AMI twice in succession upgrades very different packages except that I'm seeing this issue with aptitude updates rather than apt-get upgrades.

  Read the article

• Basics of Join Predicate Pushdown in Oracle

  - by Maria Colgan

  Happy New Year to all of our readers! We hope you all had a great holiday season. We start the new year by continuing our series on Optimizer transformations. This time it is the turn of Predicate Pushdown. I would like to thank Rafi Ahmed for the content of this blog.Normally, a view cannot be joined with an index-based nested loop (i.e., index access) join, since a view, in contrast with a base table, does not have an index defined on it. A view can only be joined with other tables using three methods: hash, nested loop, and sort-merge joins. Introduction The join predicate pushdown (JPPD) transformation allows a view to be joined with index-based nested-loop join method, which may provide a more optimal alternative. In the join predicate pushdown transformation, the view remains a separate query block, but it contains the join predicate, which is pushed down from its containing query block into the view. The view thus becomes correlated and must be evaluated for each row of the outer query block. These pushed-down join predicates, once inside the view, open up new index access paths on the base tables inside the view; this allows the view to be joined with index-based nested-loop join method, thereby enabling the optimizer to select an efficient execution plan. The join predicate pushdown transformation is not always optimal. The join predicate pushed-down view becomes correlated and it must be evaluated for each outer row; if there is a large number of outer rows, the cost of evaluating the view multiple times may make the nested-loop join suboptimal, and therefore joining the view with hash or sort-merge join method may be more efficient. The decision whether to push down join predicates into a view is determined by evaluating the costs of the outer query with and without the join predicate pushdown transformation under Oracle's cost-based query transformation framework. The join predicate pushdown transformation applies to both non-mergeable views and mergeable views and to pre-defined and inline views as well as to views generated internally by the optimizer during various transformations. The following shows the types of views on which join predicate pushdown is currently supported. UNION ALL/UNION view Outer-joined view Anti-joined view Semi-joined view DISTINCT view GROUP-BY view Examples Consider query A, which has an outer-joined view V. The view cannot be merged, as it contains two tables, and the join between these two tables must be performed before the join between the view and the outer table T4. A: SELECT T4.unique1, V.unique3 FROM T_4K T4,            (SELECT T10.unique3, T10.hundred, T10.ten             FROM T_5K T5, T_10K T10             WHERE T5.unique3 = T10.unique3) VWHERE T4.unique3 = V.hundred(+) AND       T4.ten = V.ten(+) AND       T4.thousand = 5; The following shows the non-default plan for query A generated by disabling join predicate pushdown. When query A undergoes join predicate pushdown, it yields query B. Note that query B is expressed in a non-standard SQL and shows an internal representation of the query. B: SELECT T4.unique1, V.unique3 FROM T_4K T4,           (SELECT T10.unique3, T10.hundred, T10.ten             FROM T_5K T5, T_10K T10             WHERE T5.unique3 = T10.unique3             AND T4.unique3 = V.hundred(+)             AND T4.ten = V.ten(+)) V WHERE T4.thousand = 5; The execution plan for query B is shown below. In the execution plan BX, note the keyword 'VIEW PUSHED PREDICATE' indicates that the view has undergone the join predicate pushdown transformation. The join predicates (shown here in red) have been moved into the view V; these join predicates open up index access paths thereby enabling index-based nested-loop join of the view. With join predicate pushdown, the cost of query A has come down from 62 to 32.  As mentioned earlier, the join predicate pushdown transformation is cost-based, and a join predicate pushed-down plan is selected only when it reduces the overall cost. Consider another example of a query C, which contains a view with the UNION ALL set operator.C: SELECT R.unique1, V.unique3 FROM T_5K R,            (SELECT T1.unique3, T2.unique1+T1.unique1             FROM T_5K T1, T_10K T2             WHERE T1.unique1 = T2.unique1             UNION ALL             SELECT T1.unique3, T2.unique2             FROM G_4K T1, T_10K T2             WHERE T1.unique1 = T2.unique1) V WHERE R.unique3 = V.unique3 and R.thousand < 1; The execution plan of query C is shown below. In the above, 'VIEW UNION ALL PUSHED PREDICATE' indicates that the UNION ALL view has undergone the join predicate pushdown transformation. As can be seen, here the join predicate has been replicated and pushed inside every branch of the UNION ALL view. The join predicates (shown here in red) open up index access paths thereby enabling index-based nested loop join of the view. Consider query D as an example of join predicate pushdown into a distinct view. We have the following cardinalities of the tables involved in query D: Sales (1,016,271), Customers (50,000), and Costs (787,766).  D: SELECT C.cust_last_name, C.cust_city FROM customers C,            (SELECT DISTINCT S.cust_id             FROM sales S, costs CT             WHERE S.prod_id = CT.prod_id and CT.unit_price > 70) V WHERE C.cust_state_province = 'CA' and C.cust_id = V.cust_id; The execution plan of query D is shown below. As shown in XD, when query D undergoes join predicate pushdown transformation, the expensive DISTINCT operator is removed and the join is converted into a semi-join; this is possible, since all the SELECT list items of the view participate in an equi-join with the outer tables. Under similar conditions, when a group-by view undergoes join predicate pushdown transformation, the expensive group-by operator can also be removed. With the join predicate pushdown transformation, the elapsed time of query D came down from 63 seconds to 5 seconds. Since distinct and group-by views are mergeable views, the cost-based transformation framework also compares the cost of merging the view with that of join predicate pushdown in selecting the most optimal execution plan. Summary We have tried to illustrate the basic ideas behind join predicate pushdown on different types of views by showing example queries that are quite simple. Oracle can handle far more complex queries and other types of views not shown here in the examples. Again many thanks to Rafi Ahmed for the content of this blog post.

  Read the article

• C# 4: The Curious ConcurrentDictionary

  - by James Michael Hare

  In my previous post (here) I did a comparison of the new ConcurrentQueue versus the old standard of a System.Collections.Generic Queue with simple locking.  The results were exactly what I would have hoped, that the ConcurrentQueue was faster with multi-threading for most all situations.  In addition, concurrent collections have the added benefit that you can enumerate them even if they're being modified. So I set out to see what the improvements would be for the ConcurrentDictionary, would it have the same performance benefits as the ConcurrentQueue did?  Well, after running some tests and multiple tweaks and tunes, I have good and bad news. But first, let's look at the tests.  Obviously there's many things we can do with a dictionary.  One of the most notable uses, of course, in a multi-threaded environment is for a small, local in-memory cache.  So I set about to do a very simple simulation of a cache where I would create a test class that I'll just call an Accessor.  This accessor will attempt to look up a key in the dictionary, and if the key exists, it stops (i.e. a cache "hit").  However, if the lookup fails, it will then try to add the key and value to the dictionary (i.e. a cache "miss").  So here's the Accessor that will run the tests: 1: internal class Accessor 2: { 3: public int Hits { get; set; } 4: public int Misses { get; set; } 5: public Func<int, string> GetDelegate { get; set; } 6: public Action<int, string> AddDelegate { get; set; } 7: public int Iterations { get; set; } 8: public int MaxRange { get; set; } 9: public int Seed { get; set; } 10:  11: public void Access() 12: { 13: var randomGenerator = new Random(Seed); 14:  15: for (int i=0; i<Iterations; i++) 16: { 17: // give a wide spread so will have some duplicates and some unique 18: var target = randomGenerator.Next(1, MaxRange); 19:  20: // attempt to grab the item from the cache 21: var result = GetDelegate(target); 22:  23: // if the item doesn't exist, add it 24: if(result == null) 25: { 26: AddDelegate(target, target.ToString()); 27: Misses++; 28: } 29: else 30: { 31: Hits++; 32: } 33: } 34: } 35: } Note that so I could test different implementations, I defined a GetDelegate and AddDelegate that will call the appropriate dictionary methods to add or retrieve items in the cache using various techniques. So let's examine the three techniques I decided to test: Dictionary with mutex - Just your standard generic Dictionary with a simple lock construct on an internal object. Dictionary with ReaderWriterLockSlim - Same Dictionary, but now using a lock designed to let multiple readers access simultaneously and then locked when a writer needs access. ConcurrentDictionary - The new ConcurrentDictionary from System.Collections.Concurrent that is supposed to be optimized to allow multiple threads to access safely. So the approach to each of these is also fairly straight-forward.  Let's look at the GetDelegate and AddDelegate implementations for the Dictionary with mutex lock: 1: var addDelegate = (key,val) => 2: { 3: lock (_mutex) 4: { 5: _dictionary[key] = val; 6: } 7: }; 8: var getDelegate = (key) => 9: { 10: lock (_mutex) 11: { 12: string val; 13: return _dictionary.TryGetValue(key, out val) ? val : null; 14: } 15: }; Nothing new or fancy here, just your basic lock on a private object and then query/insert into the Dictionary. Now, for the Dictionary with ReadWriteLockSlim it's a little more complex: 1: var addDelegate = (key,val) => 2: { 3: _readerWriterLock.EnterWriteLock(); 4: _dictionary[key] = val; 5: _readerWriterLock.ExitWriteLock(); 6: }; 7: var getDelegate = (key) => 8: { 9: string val; 10: _readerWriterLock.EnterReadLock(); 11: if(!_dictionary.TryGetValue(key, out val)) 12: { 13: val = null; 14: } 15: _readerWriterLock.ExitReadLock(); 16: return val; 17: }; And finally, the ConcurrentDictionary, which since it does all it's own concurrency control, is remarkably elegant and simple: 1: var addDelegate = (key,val) => 2: { 3: _concurrentDictionary[key] = val; 4: }; 5: var getDelegate = (key) => 6: { 7: string s; 8: return _concurrentDictionary.TryGetValue(key, out s) ? s : null; 9: };                    Then, I set up a test harness that would simply ask the user for the number of concurrent Accessors to attempt to Access the cache (as specified in Accessor.Access() above) and then let them fly and see how long it took them all to complete.  Each of these tests was run with 10,000,000 cache accesses divided among the available Accessor instances.  All times are in milliseconds. 1: Dictionary with Mutex Locking 2: --------------------------------------------------- 3: Accessors Mostly Misses Mostly Hits 4: 1 7916 3285 5: 10 8293 3481 6: 100 8799 3532 7: 1000 8815 3584 8:  9:  10: Dictionary with ReaderWriterLockSlim Locking 11: --------------------------------------------------- 12: Accessors Mostly Misses Mostly Hits 13: 1 8445 3624 14: 10 11002 4119 15: 100 11076 3992 16: 1000 14794 4861 17:  18:  19: Concurrent Dictionary 20: --------------------------------------------------- 21: Accessors Mostly Misses Mostly Hits 22: 1 17443 3726 23: 10 14181 1897 24: 100 15141 1994 25: 1000 17209 2128 The first test I did across the board is the Mostly Misses category.  The mostly misses (more adds because data requested was not in the dictionary) shows an interesting trend.  In both cases the Dictionary with the simple mutex lock is much faster, and the ConcurrentDictionary is the slowest solution.  But this got me thinking, and a little research seemed to confirm it, maybe the ConcurrentDictionary is more optimized to concurrent "gets" than "adds".  So since the ratio of misses to hits were 2 to 1, I decided to reverse that and see the results. So I tweaked the data so that the number of keys were much smaller than the number of iterations to give me about a 2 to 1 ration of hits to misses (twice as likely to already find the item in the cache than to need to add it).  And yes, indeed here we see that the ConcurrentDictionary is indeed faster than the standard Dictionary here.  I have a strong feeling that as the ration of hits-to-misses gets higher and higher these number gets even better as well.  This makes sense since the ConcurrentDictionary is read-optimized. Also note that I tried the tests with capacity and concurrency hints on the ConcurrentDictionary but saw very little improvement, I think this is largely because on the 10,000,000 hit test it quickly ramped up to the correct capacity and concurrency and thus the impact was limited to the first few milliseconds of the run. So what does this tell us?  Well, as in all things, ConcurrentDictionary is not a panacea.  It won't solve all your woes and it shouldn't be the only Dictionary you ever use.  So when should we use each? Use System.Collections.Generic.Dictionary when: You need a single-threaded Dictionary (no locking needed). You need a multi-threaded Dictionary that is loaded only once at creation and never modified (no locking needed). You need a multi-threaded Dictionary to store items where writes are far more prevalent than reads (locking needed). And use System.Collections.Concurrent.ConcurrentDictionary when: You need a multi-threaded Dictionary where the writes are far more prevalent than reads. You need to be able to iterate over the collection without locking it even if its being modified. Both Dictionaries have their strong suits, I have a feeling this is just one where you need to know from design what you hope to use it for and make your decision based on that criteria.

  Read the article

• Dependency Injection in ASP.NET Web API using Autofac

  - by shiju

  In this post, I will demonstrate how to use Dependency Injection in ASP.NET Web API using Autofac in an ASP.NET MVC 4 app. The new ASP.NET Web API is a great framework for building HTTP services. The Autofac IoC container provides the better integration with ASP.NET Web API for applying dependency injection. The NuGet package Autofac.WebApi provides the  Dependency Injection support for ASP.NET Web API services. Using Autofac in ASP.NET Web API The following command in the Package Manager console will install Autofac.WebApi package into your ASP.NET Web API application. PM > Install-Package Autofac.WebApi The following code block imports the necessary namespaces for using Autofact.WebApi using Autofac; using Autofac.Integration.WebApi; .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The following code in the Bootstrapper class configures the Autofac. 1: public static class Bootstrapper 2: { 3: public static void Run() 4: { 5: SetAutofacWebAPI(); 6: } 7: private static void SetAutofacWebAPI() 8: { 9: var configuration = GlobalConfiguration.Configuration; 10: var builder = new ContainerBuilder(); 11: // Configure the container 12: builder.ConfigureWebApi(configuration); 13: // Register API controllers using assembly scanning. 14: builder.RegisterApiControllers(Assembly.GetExecutingAssembly()); 15: builder.RegisterType<DefaultCommandBus>().As<ICommandBus>() 16: .InstancePerApiRequest(); 17: builder.RegisterType<UnitOfWork>().As<IUnitOfWork>() 18: .InstancePerApiRequest(); 19: builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>() 20: .InstancePerApiRequest(); 21: builder.RegisterAssemblyTypes(typeof(CategoryRepository) 22: .Assembly).Where(t => t.Name.EndsWith("Repository")) 23: .AsImplementedInterfaces().InstancePerApiRequest(); 24: var services = Assembly.Load("EFMVC.Domain"); 25: builder.RegisterAssemblyTypes(services) 26: .AsClosedTypesOf(typeof(ICommandHandler<>)) 27: .InstancePerApiRequest(); 28: builder.RegisterAssemblyTypes(services) 29: .AsClosedTypesOf(typeof(IValidationHandler<>)) 30: .InstancePerApiRequest(); 31: var container = builder.Build(); 32: // Set the WebApi dependency resolver. 33: var resolver = new AutofacWebApiDependencyResolver(container); 34: configuration.ServiceResolver.SetResolver(resolver); 35: } 36: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The RegisterApiControllers method will scan the given assembly and register the all ApiController classes. This method will look for types that derive from IHttpController with name convention end with “Controller”. The InstancePerApiRequest method specifies the life time of the component for once per API controller invocation. The GlobalConfiguration.Configuration provides a ServiceResolver class which can be use set dependency resolver for ASP.NET Web API. In our example, we are using AutofacWebApiDependencyResolver class provided by Autofac.WebApi to set the dependency resolver. The Run method of Bootstrapper class is calling from Application_Start method of Global.asax.cs. 1: protected void Application_Start() 2: { 3: AreaRegistration.RegisterAllAreas(); 4: RegisterGlobalFilters(GlobalFilters.Filters); 5: RegisterRoutes(RouteTable.Routes); 6: BundleTable.Bundles.RegisterTemplateBundles(); 7: //Call Autofac DI configurations 8: Bootstrapper.Run(); 9: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Autofac.Mvc4 The Autofac framework’s integration with ASP.NET MVC has updated for ASP.NET MVC 4. The NuGet package Autofac.Mvc4 provides the dependency injection support for ASP.NET MVC 4. There is not any syntax change between Autofac.Mvc3 and Autofac.Mvc4 Source Code I have updated my EFMVC app with Autofac.WebApi for applying dependency injection for it’s ASP.NET Web API services. EFMVC app also updated to Autofac.Mvc4 for it’s ASP.NET MVC 4 web app. The above code sample is taken from the EFMVC app. You can download the source code of EFMVC app from http://efmvc.codeplex.com/

  Read the article

• Try out Windows Phone 7 on your PC today

  - by Matthew Guay

  Anticipation has been building for the new Windows Phone 7 Series ever since Microsoft unveiled it at the Mobile World Congress in February.  Now, thanks to free developer tools, you can get a first-hand experience of the basic Windows Phone 7 Series devices on your PC. Windows Phone 7 Series represents a huge change in the mobile field for Microsoft, bringing the acclaimed Zune HD UI to an innovative phone platform.  Windows Mobile has often been criticized for being behind other Smartphone platforms, but Microsoft seeks to regain the lead with this new upcoming release.  A platform must have developers behind it to be useful, so they have released a full set of free development tools so anyone can make apps for it today.  Or, if you simply want to play with Windows Phone 7, you can use the included emulator to try out the new Metro UI.  Here’s how to do this today on your Vista or 7 computer. Please note: These tools are a Customer Technology Preview release, so only install them if you’re comfortable using pre-release software. Getting Started First, download the Windows Phone Developer Tools CTP (link below), and run the installer.  This will install the Customer Technology Preview (CTP) versions of Visual Studio 2010 Express for Windows Phone, Windows Phone Emulator, Silverlight for Windows Phone, and XNA 4.0 Game Studio on your computer, all of which are required and cannot be installed individually. Accept the license agreement when prompted. Click “Install Now” to install the tools you need.  The only setup customization option is where to save the files, so choose Customize if you need to do so. Setup will now automatically download and install the components you need, and will additionally download either 32 or 64 bit programs depending on your operating system. About halfway thorough the installation, you’ll be prompted to reboot your system.  Once your computer is rebooted, setup will automatically resume without further input.   When setup is finished, click “Run the Product Now” to get started. Running Windows Phone 7 on your PC Now that you’ve got the Windows Phone Developer tools installed, it’s time to get the Windows Phone emulator running.  If you clicked “Run the Product Now” when the setup finished, Visual Studio 2010 Express for Windows Phone should have already started.   If not, simply enter “visual studio” in your start menu search and select “Microsoft Visual Studio 2010 Express for Windows Phone”. Now, to run the Windows Phone 7 emulator, we have to test an application.  So, even if you don’t know how to program, we can open a phone application template, and then test it to run the emulator.  First, click New Project on the left hand side of the front page. Any of the application templates would work for this, but here let’s select “Windows Phone Application”, and then click Ok. Here’s your new application template, which already contains the basic phone application framework.  This is where you’d start if you want to develop a Windows Phone app, but for now we just want to see Windows Phone 7 in action. So, to run the emulator, click Debug in the menu and then select Start Debugging. Your new application will launch inside the Windows Phone 7 Series emulator.  The default template doesn’t give us much, but it does show an example application running in Windows Phone 7.   Exploring Windows Phone 7 Click the Windows button on the emulator to go to the home screen.  Notice the Zune HD-like transition animation.  The emulator only includes Internet Explorer, your test application, and a few settings. Click the arrow on the right to see the available applications in a list. Settings lets you change the theme, regional settings, and the date and time in your emulator.  It also has an applications settings pane, but this currently isn’t populated. The Time settings shows a unique Windows Phone UI. You can return to the home screen by pressing the Windows button.  Here’s the Internet Explorer app running, with the virtual keyboard open to enter an address.  Please note that this emulator can also accept input from your keyboard, so you can enter addresses without clicking on the virtual keyboard. And here’s Google running in Internet Explorer on Windows Phone 7. Windows Phone 7 supports accelerometers, and you can simulate this in the emulator.  Click one of the rotate buttons to rotate the screen in that direction. Here’s our favorite website in Internet Explorer on Windows Phone 7 in landscape mode. All this, running right inside your Windows 7 desktop… Developer tools for Windows Phone 7 Although it may be fun to play with the Windows Phone 7 emulator, developers will be more excited to actually be able to create new and exciting apps for it.  The Windows Phone Developer Tools download includes Visual Studio Express and XNA Game Studio 4.0 which lets you create enticing games and apps for Windows Phones.  All development for Windows Phones will be in C#, Silverlight, and the XNA game framework.  Visual Studio Express for Windows Phone includes templates for these, and additionally has code samples to help you get started with development. Conclusion Many features are still not functional in this preview version, such as the search button and most of the included applications.  However, this still gives you a great way to experience firsthand the future of the Windows Phone platform.  And, for developers, this is your chance to set your mark on the Windows Phone 7 Series even before it is released to the public.  Happy playing and developing! Links Download Windows Phone Developer Tools CTP Windows Phone Developer Site Similar Articles Productive Geek Tips Keep Track of Homework Assignments with SoshikuWeekend Fun: Watch Television On Your PC With TVUPlayerEasily Manage Your Downloads with Download StatusbarCreate a Shortcut or Hotkey to Mute the System Volume in WindowsHow-To Geek on Lifehacker: How to Make Windows Vista Less Annoying TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Convert the Quick Launch Bar into a Super Application Launcher Automate Tasks in Linux with Crontab Discover New Bundled Feeds in Google Reader Play Music in Chrome by Simply Dragging a File 15 Great Illustrations by Chow Hon Lam Easily Sync Files & Folders with Friends & Family

  Read the article

< Previous Page | 270 271 272 273 274 275 276 277 278 279 280 281  | Next Page >