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• What are my options in replacing the noisy fan in my Linksys Cisco SRW2008P managed GigE switch?

  - by Fred Sobotka

  My first managed GigE switch, the Linksys SRW2008, was a dream, until it started randomly chattering on various ports. That started while I was on the road all the time, which made it take forever to diagnose, but that's a different problem. When I finally determined that the switch was bad, it was still covered by warranty by Linksys/Cisco, so I opened an RMA ticket and returned it. Unfortunately, Linksys/Cisco "upgraded" my replacement switch to a SRW2008P, which has Power over Ethernet features I never planned on using. That by itself wasn't so bad, but it's my guess that the inclusion of PoE functions in this model required a tiny, super-loud internal fan to keep everything cool. This wasn't something I wanted or asked for, but, now that I am stuck with it, I am investigating options for replacing that little internal fan with something far quieter. For example, if I attach a larger fan to the outsite of the chassis, I think it could push enough air to replace the stock fan that is currently there. Any advice on carrying this out? I have no interest in melting my switch due to insufficient ventilation.

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• Google 2-step verification: Should my phone know my password? [closed]

  - by Sir Code-A-Lot

  Hi, Just enabled 2-step verification for my Google account. I have installed Google Authenticator on my Android phone, and I set up an application specific password for the Google account associated on my phone. This works great when just using installed apps like Gmail, Calendar and Google Reader. But if I want to access Google Docs, Google Tasks or any other website that requires a Google login, I don't seem to be able to use a application specific password. I have to use my real password and then use Google Authenticator to make a code for the next step. This means if my phone is stolen, revoking the password to my phone is pointless. The phone have already been verified, and all that is needed is my password, which the phones browser will have remembered. I realize that I can take measures to ensure the phones browser doesn't remember my password, but that's just not convenient at all. Am I missing something, or is there no elegant solution to this? Should I just let my phone know my real password? As I see it, being able to login with application specific passwords on websites (which apparently isn't possible) is the only way I can revoke my phones access in a meaningful way.

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• Is there any functional-like unix shell?

  - by Caruccio

  I'm (really) newbie to functional programming (in fact only had contact with it using python) but seems to be a good approach for some list-intensive tasks in a shell environment. I'd love to do something like this: $ [ git clone $host/$repo for repo in repo1 repo2 repo3 ] Is there any Unix shell with these kind of feature? Or maybe some feature to allow easy shell access (commands, env/vars, readline, etc...) from within python (the idea is to use python's interactive interpreter as a replacement to bash). EDIT: Maybe a comparative example would clarify. Let's say I have a list composed of dir/file: $ FILES=( build/project.rpm build/project.src.rpm ) And I want to do a really simple task: copy all files to dist/ AND install it in the system (it's part of a build process): Using bash: $ cp ${files[*]} dist/ $ cd dist && rpm -Uvh $(for f in ${files[*]}; do basename $f; done)) Using a "pythonic shell" approach (caution: this is imaginary code): $ cp [ os.path.join('dist', os.path.basename(file)) for file in FILES ] 'dist' Can you see the difference ? THAT is what i'm talking about. How can not exits a shell with these kind of stuff build-in yet? It's a real pain to handle lists in shell, even its being a so common task: list of files, list of PIDs, list of everything. And a really, really, important point: using syntax/tools/features everybody already knows: sh and python. IPython seams to be on a good direction, but it's bloated: if var name starts with '$', it does this, if '$$' it does that. It's syntax is not "natural", so many rules and "workarounds" ([ ln.upper() for ln in !ls ] -- syntax error)

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• How does one debug Windows network share authentication?

  - by ajs410

  I have machine0 with 32-bit Vista, logged in as a domain user, running a VMWare image of 32-bit Vista, logged in as a local user, with the VM set to bridge the network. From an administrator account (called admin) within the VM, I try to access the hidden C$ share on machine0 (i.e. start - run - "\\machine0\C$\"). I get no prompts for credentials. Worse, machine0 has an admin account (different password), and machine0\admin gets locked out when VM\admin tries to access the network share. I get a message several seconds later, which feels like a cached credential failure leading to the lockout. I have checked several places for cached credentials; net use, Stored Usernames and Passwords, mapped shares. I rebooted (both machine0 and VM) to make sure the session was clear of any cached credentials. I can force net use to use my domain credentials when accessing machine0, and then I can see the share. I can also see shares that do not require credentials. I decided to try another machine on the network (machine1), 64-bit Vista, local user. This machine has no lockout policy, and after several seconds (feels like failed cached credentials again) it prompts me for credentials. After I enter them, it re-prompts me, saying "logon unsuccessful" (tried my domain credentials, and also machine1\admin's). Which is bogus, because I proceed to log on with remote desktop using the machine1\admin credentials. I have tried this on another machine (machine2, 64-bit Vista), running a copy of the same 32-bit VM, and I don't remember having this problem. machine0 has a fingerprint reader...could that try storing passwords and interfere? Are there any places I'm missing where there could be cached credentials? Is there a way to see what credentials are flying around when I try to connect?

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• IIS Request Filtering Rule for User Agent

  - by alexp

  I'm trying to block requests from a certain bot. I've added a request filtering rule, but I know it is still hitting the site because it shows up in Google Analytics. Here is the filtering rule I added: <security> <requestFiltering> <filteringRules> <filteringRule name="Block GomezAgent" scanUrl="false" scanQueryString="false"> <scanHeaders> <add requestHeader="User-Agent" /> </scanHeaders> <denyStrings> <add string="GomezAgent+3.0" /> </denyStrings> </filteringRule> </filteringRules> </requestFiltering> </security> This is an example of the user agent I'm trying to block. Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:13.0;+GomezAgent+3.0)+Gecko/20100101+Firefox/13.0.1 In some ways it seems to work. If I use Chrome to spoof my user agent, I get a 404, as expected. But the bot traffic is still showing up in my analytics. What am I missing?

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• Why is only one wget command working in my crontab?

  - by afEkenholm

  I wish to fetch content from a PHP script on my server two times a day, altering a query variable lang to set what language we want, and save this content in two language specific files. This is my crontab: */15 * * * * ~root/apache.sh > /var/log/checkapache.log 10 0 * * * wget -O /path/to/file-sv.sql "http://mydomain.com/path/?lang=sv" 11 0 * * * wget -O /path/to/file-en.sql "http://mydomain.com/path/?lang=en" The problem is that only the first wget command line is being executed (or to be precise: the only file that is being written is /path/to/file-sv.sql). If I switch the second and the third row, /path/to/file-en.sql gets written instead. The first line always runs as expected, no matter where it is. I then tried using lynx -dump "http://mydomain.com/path/?lang=xx" > /path/to/file-xx.sql to no avail; still only the first lynx line executed successfully. Even mixing wget and lynx did not change this! Getting kinda desperate! Am I missing something? There are thousands of articles on crontab (combined with) wget or lynx, but all seems to cover basic setups and syntax. Does anyone got a clue of what I am doing wrong? Thanks, Alexander

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• Windows Server 2008 IIS7 - page requests randomly hang or timeout

  - by seb835

  I've just installed a fresh copy of Windows Server 2008 x64 with IIS7 and PHP (fast CGI). However, I'm noticing that after moving my web site from a similarly specified machine to this one, I'm getting issues. The issue seems to be that randomly, as I'm clicking through the web pages being served, the browser will suddenly hang saying "waiting for mysite.com...". Sometimes the page will then timeout, or finally resolve after 20 to 30 seconds, but maybe missing the CSS style sheet. Very strange, as this is the only website installed on this new server, and only myself using/testing it. Server is installed in the same data centre below the old server. Has anyone else had a similar problem? I tried increasing the max workers pool to 10 (from 1), but this has no effect. Seems to happen most frequently after 1 or 2 minutes of inactivity on the website, then trying to load/refresh a web page. Many thank for any info and help. Kind Regards, Seb

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• Server 2008 email on Event variables

  - by Jeff Miles

  One of the new features of Server 2008 is the ability to attach a task to a specific event in the event logs. One of the actions available is to send an email through a SMTP server. This is working great, however it would be ideal if in the message body, the Event contents could be placed. I have tried using $eventdescription and %eventdescription%, but those are just shots in the dark. Any amount of googling produces no results. Does anyone know if this is possible? Update: Sparks' suggestion below is a step in the right direction I believe, however that method doesn't seem to work for all values. For example, I can pull the RecordID, Severity and Channel as shown, but I can't use the same method to retreive the EventID, or most importantly the description. Here's the raw XML from one event: [Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"] [System] [Provider Name="DFSR" /] [EventID Qualifiers="16384"]4412[/EventID] [Level]4[/Level] [Task]0[/Task] [Keywords]0x80000000000000[/Keywords] [TimeCreated SystemTime="2009-05-14T18:18:09.000Z" /] [EventRecordID]45692[/EventRecordID] [Channel]DFS Replication[/Channel] [Computer]servername.domain.com[/Computer] [Security /] [/System] [EventData] [Data]9046C3F4-843E-4A53-B941-4B20764072E5[/Data] [Data]D:\departments\Geomatics\Plan Quality\Data Processing\CG3533017 2009-05-13 KT FIXED[/Data] [Data]D:\departments[/Data] [Data]{26D5F604-E603-4F87-8EC3-DE9A945DA8FD}-v927199[/Data] [Data]Departments[/Data] [Data]swg.ca\files\departments[/Data] [Data]B8242CE2-F5EB-47DA-BA5B-1DD2F7EE3AB9[/Data] [Data]DFAA7A54-66CB-4C31-81A0-0F861382C32C[/Data] [Data]CG3533017 2009-05-13-{26D5F604-E603-4F87-8EC3-DE9A945DA8FD}-v927199[/Data] [/EventData] [/Event] I have tried using a ValueQuery for EventData, but it returns no data.

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• USB drive was bootable, but no longer isn't

  - by i-g

  I'm trying to install a new OS onto a computer from a bootable USB stick. I previously installed Ubuntu Linux and it was a piece of cake -- I downloaded the ISO image, used UNetbootin to copy it to the USB drive and make it bootable, and that was that. Now, however, no matter what I try, I can't make the same USB drive bootable again! I've tried formatting it as FAT32 and NTFS. I've tried several different Linux distributions and Windows 7. I've tried using UNetbootin, Windows 7 USB Download Tool, WinToFlash, and manually making it bootable with diskpart/bootsect/bootrec. (Yes, I've tried bootsect /nt60 x: /force.) None of this seems to be working! When I try to boot from the drive, the machine reads from it (I can see the drive's LED blinking) and then gives me the same "Insert system disk and press Enter" message. (I've disabled booting from the hard drive.) Am I missing something I need to do to make the USB drive bootable again? The USB drive in question is a SanDisk Cruzer 8GB SDCZ6. The computer I'm working on is running Windows Vista SP1.

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• virtual host settings fail on multiple sites

  - by Ricalsin

  Wow. I'm puzzled. On my ubuntu system I've setup an apache2 server and configured three virtual hosts in the /etc/apache2/sites-available directory. a2ensite to symbolic link the sites-enabled. The first two work great; a simple url of localhost.mysitenames.com works great for the first two sites, both finding their DocumentRoot and Directory paths. The third always generates a Bad Request (Invalid Hostname) response. No server error.log as it never hits it. I've copied/pasted the working vhost files, made the minor changes to the ServerName, DocumentRoot and Directory and the same problem persists. I always "sudo /etc/init.d/apache2 restart" whenever I make a change. I've cleared the browser cache as well. No love. There's not a limit to the number of sites you can host, right? My goal was a localhost development environment with the expectation I can run any number of websites locally before pushing them to a live server. Any thoughts on how to debug this? Or, just a simple solution I am missing?

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• How do I configure Jetty (via jettyrunner) so that it names a character set in the Content-Type response header?

  - by Pointy

  I use Jetty (via the oh-so-handy Jetty Runner) for day-to-day web application testing. One thing I've recently stumbled on is the fact that I don't get a character set called out in the "Content-Type" response header all the time. I do get it in response to my application's XMLHttpRequest transactions, but not for plain old pages loaded by <a> links or whatever. I've read a little bit about how to set up a Jetty config file, but I've never been able to completely understand that; all servlet containers are complicated, and while Jetty is pretty simple it's just weird enough that I don't grok the overall idea. Thus, all I do to launch my app is to run the Jetty Runner .jar file with a couple of simple arguments to set up the port number and logfile path, and then I just give it the .war file to run. It works great — except for the missing character set :-) Anybody have a quick sample config file that might fix this? edit — oh if it matters, I'm running Jetty 7.0.0 RC3; I've also tried with a slightly newer version (still 7.something) with exactly the same issue. All my testing is on Ubuntu.

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• Access an external SSH server through a restrictive proxy [on hold]

  - by Cyrille

  I'm a software developer. I wish to access my computer at home through SSH. For example, I sometime need to access my personal projects source code to check how I handled specific problems. Unfortunately, I currently work under an over-restrictive and anti-productive proxy that waste a hell of a lot of everyone's time (We often have to visit websites from our smartphones or use a web proxy to check very legitimates websites for answers, and don't get me started on other "security" overkill features we have to cope with...). Well, back to the subject, I can access my home computer from my phone (SSH, port 22 and 80 both redirected by router on port 22). It works, but it's quite uncomfortable. From my office computer, this is what I tried so far: export http_proxy=http://user:pass@proxyip:8080 echo "user:pass" > ~/.corkscrew-auth echo "ProxyCommand corkscrew proxyip 8080 %h %p /home/me/.corkscrew-auth" > ~/.ssh/config ssh 82.23.34.56 -l me -p 80 Proxy could not open connnection to 82.23.34.56: Forbidden ssh_exchange_identification: Connection closed by remote host (same without -p 80) Without corkscrew: ssh: connect to host 82.23.34.56 port 80: Connection timed out ssh: connect to host 82.23.34.56 port 22: Connection timed out Any other idea ?

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• Creating a private wiki

  - by Hand-E-Food

  I want to create a simple, private wiki, but am really struggling to find what I need. I require the following features: Private wiki. Only I will read or write it. Some formatting capability: headings, bold, italic, bullets, block quotes Wiki Viewer for Windows 7. If it comes with an editor, I need to be able to hide it. Page Editor for Windows 7. Page Editor for iPhone. Synchronize by cloud but available offline in Windows. So far, my research has led me to Markdown language. I can easily edit this as plain text using Notepad++ for Windows and Elements for iPhone. I can sync these files through Dropbox and have them available offline. What I can't find is a suitable viewer for Windows. I'd prefer to steer away from using HTML due to its verbose formatting codes. Can anyone recommend a solution for me? If need be, I'll happy to make a small one-off payment for software.

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• Subsequent runs of rsync locally don't reduce data transferred

  - by sharakan

  I have an EC2 instance with data I want to sync to a mounted, but remote, volume, as a backup. rsync seems like the way to go with this, so as a test I took my test file (a Postgres pg_dump file) and used rsync -v to copy it to the mounted volume: [ec2-user work]$ rsync -v dump.sql.1 ../backup/dump.sql dump.sql.1 sent 821704315 bytes received 31 bytes 3416650.09 bytes/sec total size is 821603948 speedup is 1.00 Then, I ran it again, expecting to see minimal sent/received numbers because it would just be checksums. Instead... [ec2-user work]$ rsync -v dump.sql.1 ../backup/dump.sql dump.sql.1 sent 821704315 bytes received 31 bytes 3402502.47 bytes/sec total size is 821603948 speedup is 1.00 I'm new to rsync so perhaps I'm missing something, but isn't the idea that the source and destination files are checked for differences, and then a patch is generated and applied to the destination? Why is this not reducing the amount of data 'sent' to just the size of the checksums? Some background if it's relevant: the mounted volume is using s3fs, mounted with s3fs <bucketname> backup.

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• Samba/Winbind issues joing to Active directory domain

  - by Frap

  I'm currently in the process of setting up winbind/samba and getting a few issues. I can test connectivity with wbinfo fine: [root@buildmirror ~]# wbinfo -u hostname username administrator guest krbtgt username [root@buildmirror ~]# wbinfo -a username%password plaintext password authentication succeeded challenge/response password authentication succeeded however when I do a getent I don't get any AD accounts returned [root@buildmirror ~]# getent passwd root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin puppet:x:52:52:Puppet:/var/lib/puppet:/sbin/nologin my nsswitch looks like this: passwd: files winbind shadow: files winbind group: files winbind #hosts: db files nisplus nis dns hosts: files dns and I'm definitely joined to the domain: [root@buildmirror ~]# net ads info LDAP server: 192.168.4.4 LDAP server name: pdc.domain.local Realm: domain.local Bind Path: dc=DOMAIN,dc=LOCAL LDAP port: 389 Server time: Sun, 05 Aug 2012 17:11:27 BST KDC server: 192.168.4.4 Server time offset: -1 So what am I missing?

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• In need of assistance for recovering a lost partition

  - by Tek

  The program that has worked for the most part is Active@ Partition Recovery. I'm so close but yet so far from recovering my data. Okay so here's what happens. In the following screenshot (blanked out a folder and filename with profanity in case some of you guys are at work :P), it detects the partition I accidentally deleted with ALL 100% of my data listed. Of course, I didn't write ANY data to that drive after I did this. But when I click "recover" and finishes the recovery process, in Windows I click on the partition that was just was just recovered... It's EMPTY. The program seems to be able to see my lost files, but when I recover the partition windows doesn't seem to think the same =( Things I tried: I tried running a chkdsk /r /f after I recovered the partition, apparently it couldn't find any errors. Tried using other software like TestDisk to recover the partition, but they (all) act similar to Windows in that it detects the (missing) partition but when I browse it there's no files. The partition is there along with all the file and data information. The sector information is also in the screenshot, is there any way I can use this to my advantage in recovering my data? Other information: Dualboot: Win8 / Ubuntu 12.10 x64 1TB Internal desktop drive, GPT Layout, NTFS formatted drive, 64K allocation size.

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• lighttpd domains and url matching

  - by Manuel

  I'm trying to configure lighttpd so that: www.domain1.org/admin uses config1 any other URL on www.domain1.org uses config2 any url on www.domain2.org uses config2 So basically, domain1 and domain2 should use the same configuration except for when domain1 is accessed via an URL that starts with /admin I tried so far a number of variations, including this one: $HTTP["host"] =~ "domain1.org" { $HTTP["url"] =~ "^/admin" { // config1 alias.url = ("/media/admin" => "/usr/share...", "/static" => "/var/www/...") url.rewrite-once = ( "^(/media/admin.*)$" => "$1", "^(/static.*)$" => "$1", "^/favicon\.ico$" => "/media/favicon.ico", "^(/.*)$" => "/application.fcgi$1", ) server.document-root="/var/www/application" fastcgi.debug = 1 fastcgi.server = ( "/application.fcgi" => ( "main" => ( "socket" => "/var/www/application/application.sock", "check-local" => "disable", ) ), ) } else $HTTP["url"] !~ "^/admin" { // config2 } $HTTP["host"] !~ "domain1.org" { // config2 } But no matter what, accessing domain1.org/admin yields a 404. Is there anything that I am missing?

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• Nexenta, NFS and LOCK_EX

  - by Givre

  I'm currently using an LAMP architecture and I expect a big problem :( I have several http web server using PHP5. All are mounting via NFS (v3) the directory for all the hosted websites. The file server is running the Nexenta Storage Appliance using ZFS . The problem is all the NFS client trying to write something in a file over the NFS get this problem : This is inside the apache2 process: open("/nfs/website1/file.txt", ORDWR|OCREAT, 0600) = 11647 fstat(11647, {stmode=SIFREG|0600, st_size=23754, ...}) = 0 flock(11647, LOCK_EX And the process never get the LOCK and keep waiting for... always. The effect? All the apache2 procces get used and waiting.. my severs can't still proccess the others requests because there is no more proccess available. I don't now where to find a solution.. for me it.'s on the NFS server side.. but wich configuration is wrong or missing ? How can I find what is wrong? If you need more information about the configuration, just ask me what can help you more :)

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• How to fix UNMOUNTABLE_BOOT_VOLUME (0x000000ED) on my Windows XP DELL laptop?

  - by Neil

  I have a Dell Latitude D410. Running Windows XP. I am receiving the STOP: 0x000000ED (0X899CF030,0XC0000185,0X00000000,0X00000000) Blue screen. Initially, I tried everything specified with the Microsoft KB articles. At this time, I was able to boot into the general safemode. I pulled the hard drive and was able to run chkdsk on it- it noted that it had fixed some errors, but I was still unable to boot. I put a brand new hard drive in the laptop. Windows XP installation worked up until the reboot, at which time the exact same error message came back up. What I have tried (all since the new hard drive was installed): chkdsk /R All suggested solutions in Microsoft KB articles Reseating RAM Opened laptop, reseated all connectors, looked for signs of damage (saw none) Reset BIOS options to default Ran the basic Dell diagnostics I have looked at the current entry:How can I boot XP after receiving stop error 0x000000ED - I am currently in the process of downloading the Ultimate Boot CD to use as a test, but I am not holding out a lot of hope as I really doubt this brand new Hard Drive is bad. Can anyone think of other areas I am missing? Ran MEMTEST86+ V4.10 for 15 passes (overnight). 0 Errors EDIT: FORMATTING

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• What can inexperienced admin expect after server setup completed seemingly fine? [closed]

  - by Miloshio

  Inexperienced person seems to have done everything fine so far. This is his very first time that he is the only one in charge for LAMP server. He has installed OS, network, Apache, PHP, MySQL, Proftpd, MTA & MDA software, configured VirtualHosts properly (facts because he calls himself admin), done user management and various configuration settings with respect to security recommendations and... everything is fine for now... For now. If you were directing horror movie for server admin above mentioned what would you make up for boogieman that showed up and started to pursue him? Omitting hardware disaster cases for which one cannot do anything 'from remote', what is the most common causes of server or part-of-server or server-related significant failure when managed by inexperienced admin? I have in mind something that is newbie admins very often missing which is leading to later intervention of someone with experience? May that be some uncontrolled CPU-eating leftover process, memory-related glitch, widely-used feature that messes up something unexpected on anything like that? Newbie admin for now only monitors disk-space and RAM usage, and number of running processes. He would appreciate any tips regarding what's probably going to happen to his server over time.

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• Gigabit network limited to 25MB/s by CPU. How to make it faster?

  - by netvope

  I have a Acer Aspire R1600-U910H with a nForce gigabit network adapter. The maximum TCP throughput of it is about 25MB/s, and apparently it is limited by the single core Intel Atom 230; when the maximum throughput is reached, the CPU usage is about 50%-60%, which corresponds to full utilization considering this is a Hyper-threading enabled CPU. The same problem occurs on both Windows XP and on Ubuntu 8.04. On Windows, I have installed the latest nForce chipset driver, disabled power saving features, and enabled checksum offload. On Linux, the default driver has checksum offload enabled. There is no Linux driver available on Nvidia's website. ethtool -k eth0 shows that checksum offload is enabled: Offload parameters for eth0: rx-checksumming: on tx-checksumming: on scatter-gather: on tcp segmentation offload: on udp fragmentation offload: off generic segmentation offload: off The following is the output of powertop when the network is idle: Wakeups-from-idle per second : 61.9 interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 90.9% (101.3) <interrupt> : eth0 4.5% ( 5.0) iftop : schedule_timeout (process_timeout) 1.8% ( 2.0) <kernel core> : clocksource_register (clocksource_watchdog) 0.9% ( 1.0) dhcdbd : schedule_timeout (process_timeout) 0.5% ( 0.6) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) And when the maximum throughput of about 25MB/s is reached: Wakeups-from-idle per second : 11175.5 interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 99.9% (22097.4) <interrupt> : eth0 0.0% ( 5.0) iftop : schedule_timeout (process_timeout) 0.0% ( 2.0) <kernel core> : clocksource_register (clocksource_watchdog) 0.0% ( 1.0) dhcdbd : schedule_timeout (process_timeout) 0.0% ( 0.6) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) Notice the 20000 interrupts per second. Could this be the cause for the high CPU usage and low throughput? If so, how can I improve the situation? The other computers in the network can usually transfer at 50+MB/s without problems. And a minor question: How can I find out what is the driver in use for eth0?

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• empty file from tomcat https redirect?

  - by amertune

  I am using tomcat 6.0.20, with jdk 1.6.0_18 on 64 bit linux (tomcat downloaded from tomcat.apache.org, not installed from repositories). I have iptables redirects from port 80 - 8080 and 443 - 8443. In server.xml, the connector for port 8080 redirects to 443, and the 8443 connector has proxyPort="443". In conf/web.xml, I have added this bit at the end of the file (but still inside the <web-app</webapp tags). <security-constraint> <web-resource-collection> <web-resource-name>Protected Context</web-resource-name> <url-pattern>/*</url-pattern> </web-resource-collection> <user-data-constraint> <transport-guarantee>CONFIDENTIAL</transport-guarantee> </user-data-constraint> </security-constraint> I also have two contexts, ROOT and mywebapp. If I go to http://myurl.com, then I get redirected to https://myurl.com. If I go to http://myurl.com/mywebapp/, then I get redirected to https://myurl.com/mywebapp/. The problem I'm having is when I go to http://myurl.com/mywebapp (no trailing slash). When I do this I get a prompt to download an empty file that has an empty name. Going to https://myurl.com/mywebapp works. I would think that a user typing myurl.com/mywebapp is far from rare. Is there something I'm missing?

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• Loading the preview function of AUCTeX 11.86 on macports Emacs-app 23.2.1 port.

  - by Sarah

  I've installed Emacs-app 23.2.1 via MacPorts and I'm trying to install AUCTeX 11.86 so that it will work on this installation. I've run the following configure line for AUCTeX and that seems to work. ./configure --with-emacs=/Applications/MacPorts/Emacs.app/Contents/MacOS/Emacs --with-lispdir=/Applications/MacPorts/Emacs.app/Contents/Resources/site-lisp/ --with-texmf-dir=/usr/local/texlive/2010basic/texmf-local/ make and make install seem to work, and I've added the following line to my init.el (require 'tex-site) as per the installation instructions. However, when I open a TeX file, the Preview menu does not show up (although the LaTeX menu does.) The following are some of my tests: M-x load-library RET preview-latex RET doesn't seem to do anything. M-x load-library RET preview RET brings up the Preview menu. Is it safe to somehow add the load-library preview to my init.el? Or do I risk mucking up something? I'm new to Emacs and primarily trying to learn it because of the AUCTeX preview features, but I don't feel very safe in this environment yet.

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• I can't connect to internet via lan cable because 2032 battery died and my bios bios info is now empty [closed]

  - by Rand Om Guy

  I have a compaq CQ61-112SL from about 5 years now... the main battery is almost dead, doesn't keep more then 10 minutes. anyway my problem is that my motherboard battery didn't have any more energy left a few days ago and since then I can't access internet through lan cable but only via wifi. I need cable though. I saw that on my BIOS setup page there were a bunch of parameters missing like serial number, UUID, product number and stuff like that. Also when I start the notebook it prints something like : No serial found. or something like that. I don't really know if the reason why my lan cable doesn't work is the empty BIOS but i assume that's it. If it's not please enlighten me. Or anyway tell me how to update the serial number and product number to the real ones (instead of the 0000000000000 that is now in my bios). I downloaded HP DMI which should make it possible to set these variables on the BIOS but i'm on Windows 8 64bit and the executable file that I need to open for my laptop model says it can't run on 64 bit.

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• How to install (old) packages for Ubuntu 9.04?

  - by wchrisjohnson

  Based on some excellent feedback by Mark here (http://serverfault.com/questions/285598/should-i-clone-a-physical-server-to-create-a-vm-for-a-staging-server), today I was able to use the vmware converter to clone my production server for a staging server. However the nic won't come up no matter what I do. I attempted to inistall vmware tools, as I suspect that the fact that it is not installed might prevent the nic from working. (I have the nic set as a vmxnet3 card in the vm settings). The install failed because there were several dependencies missing as well as the Linux headers. Given that Ubuntu 9.04 has been EOL'd, the packages I need to install to get the vmware tools to install are no longer available. I doubt the ubuntu 9.04 install CD has the packages on it. What are my options? I'd rather not upgrade the version of Ubuntu yet, as the point of the vm right now is to maintain parity with the production server. Might I have better luck resetting the driver to use vmxnet2 instead of the vmxnet3? Thanks in advance! Chris

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