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• Apache going straight to 100% mem usage on localhost

  - by Dennis Pedrie

  Hi, I'm running XAMPP on a OS X testing server... I'm the only person sending requests to the server. I've never messed with Apache config before, so I'm kinda without a paddle here. When I start Apache, I get ~10 httpd processes started, and 95% idle CPU. When I request a WordPress page, the CPU usage goes to 50%, and the page loads in about five seconds. It seems like once the page has finished loading, the CPU usage jumps to 100%, almost all of that httpd. A ton of processes get started, and they don't go away, and their CPU usage stays the same. I've changed the MaxRequestPerChild setting and so forth, but nothing seems to solve the problem. Even now, having not send any requests for about 15 minutes, the CPU usage is at 100%. Here's the applicable settings: Timeout 10 KeepAlive On MaxKeepAliveRequests 0 KeepAliveTimeout 3 <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 0 MaxSpareServers 2 MaxClients 20 MaxRequestsPerChild 50 </IfModule> I had always thought that once the request was made, Apache killed the process. Is there anything I can do to bring down the CPU usage, or is this just something I'll have to deal with? Thanks for helping out an Apache idiot.

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• Why is my apache2, mod_fcgid, php configuration causing 100% cpu usage?

  - by Scott Lundgren

  Page load makes a quick initial connection, then hangs about 10 seconds before the page renders. When the server load goes up I start watching top & I see that both CPUs get pegged at times to 100% by between 4-8 processes of php-cgi. My theory is that since I never see RAM usage never go above 50%, that apache is able to handle the requests coming in, but is queueing them for PHP to process. What is wrong with my mod_fcgid/php configuration ? RHEL 5.4 2 Xeon E5420s @ 2.50 Ghz 4 Gb RAM Apache 2.2.3 Timeout 30 KeepAlive On MaxKeepAliveRequests 0 KeepAliveTimeout 5 <IfModule worker.c> StartServers 2 MaxClients 300 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 </IfModule> mod_fcgid 2.2.10 LoadModule fcgid_module modules/mod_fcgid.so <IfModule !mod_fastcgi.c> AddHandler fcgid-script fcg fcgi fpl php </IfModule> SocketPath run/mod_fcgid SharememPath run/mod_fcgid/fcgid_shm DefaultInitEnv PHPRC "/etc/" FCGIWrapper /usr/bin/php-cgi .php MaxRequestsPerProcess 1500 MaxProcessCount 20 IPCCommTimeout 240 IdleTimeout 240 APC 3.0.19 extension = apc.so apc.enabled=1 apc.shm_segments=1 apc.optimization=0 apc.shm_size=32 apc.ttl=7200 APC cache is 43% used with a 99% hit rate

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• Drivers and firmware for the LiteOn ihap-122-9 DVD drive

  - by Sandy

  I'm trying to replace the DVD drive in my old PC. LiteOn.com is a mess and I can't find a single working driver or firmware update there, or anywhere. Windows XP tries to use a default, generic driver dated 2001. (About 9 years before this drive even existed.) http://www.firmwarehq.com/download_1..._6L0H.EXE.html This correctly finds my LiteOn ihap-122-9 DVD Drive. It correctly finds that I'm currently using firmware 6L0F. It correctly tries to install 6L0H. It completes 100% but then just fails and says "contact your vendor". Does anyone know why? Where can I actually get drivers... and firmware updates... that actually work for the ihap-122-9? Apparently, the newest driver IS the 1 made 9 years before the drive existed. (Unbelievable.) And the latest firmware is the 1 that is already in the drive. (Common.) No other drive I've had in this computer ever had a problem. This brand new LiteOn is doing this: Opening MY COMPUTER now takes 60 seconds. MY COMPUTER marking the drive as "DVD F:" takes another 30 seconds. MY COMPUTER showing "Batman II" title takes another 15 seconds. Clicking and running the movie will take another 30 seconds for the main-menu to appear. The movie starts about 20 seconds later. The movie runs fine for 1-2 seconds... then stops for 5 seconds.... then starts again and plays for 1-2 seconds. Repeats for 2 hours. (It happens with all store-bought DVDs and all home-made DVDs.)

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• How is it possible that I can do a host lookup but not a curl?

  - by Daniel Quinn

  Has anyone ever seen this before? Note that this happens not only with google.com, but with every domain I try. It's a wireless connection (WEP), but I'm not sure how that would be relevant: $ curl -v google.com # This takes about 60s to return * getaddrinfo(3) failed for google.com:80 * Couldn't resolve host 'google.com' * Closing connection #0 curl: (6) Couldn't resolve host 'google.com' $ host google.com google.com has address 209.85.148.106 google.com has address 209.85.148.147 google.com has address 209.85.148.99 google.com has address 209.85.148.103 google.com has address 209.85.148.104 google.com has address 209.85.148.105 google.com mail is handled by 30 alt2.aspmx.l.google.com. google.com mail is handled by 40 alt3.aspmx.l.google.com. google.com mail is handled by 50 alt4.aspmx.l.google.com. google.com mail is handled by 10 aspmx.l.google.com. google.com mail is handled by 20 alt1.aspmx.l.google.com. $ cat /etc/resolv.conf # Generated by NetworkManager nameserver 192.168.1.201 $ cat /etc/hosts 127.0.0.1 localhost ::1 localhost $ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 wlan0 127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0

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• Sun Grid Engine (SGE) / limiting simultaneous array job sub-tasks

  - by wfaulk

  I am installing a Sun Grid Engine environment and I have a scheduler limit that I can't quite figure out how to implement. My users will create array jobs that have hundreds of sub-tasks. I would like to be able to limit those jobs to only running a set number of tasks at the same time, independent of other jobs. Like I might have one array job that I want to run 20 tasks at a time, and another I want to run 50 tasks at a time, and yet another that I'm fine running without limit. It seems like this ought to be doable, but I can't figure it out. There's a max_aj_instances configuration option, but that appears to apply globally to all array jobs. I can't see any way to use consumable resources, as I'd need a "complex attribute" that is per-job, and that feature doesn't seem to exist. It didn't look like resource quotas would work, but now I'm not so sure of that. It says "A resource quota set defines a maximum resource quota for a particular job request", but it's unclear if an array job's sub-tasks' resource requests will be aggregated for the purposes of the resource quota. I'm going to play with this, but hopefully someone already knows outright.

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• Very different results from df after a few seconds

  - by tatus2

  When the backup moves the files from one server to the other the results from df change every few seconds in an impossible manner. The source host is running rsync. On the destination host I'm running the following command every few seconds: echo `date` `df|grep md0` Results are below: Sat Jun 29 23:57:12 CEST 2013 /dev/md0 4326425568 579316100 3527339636 15% /MD0 Sat Jun 29 23:57:14 CEST 2013 /dev/md0 4326425568 852513700 3254142036 21% /MD0 Sat Jun 29 23:57:15 CEST 2013 /dev/md0 4326425568 969970340 3136685396 24% /MD0 Sat Jun 29 23:57:17 CEST 2013 /dev/md0 4326425568 1255222180 2851433556 31% /MD0 Sat Jun 29 23:57:20 CEST 2013 /dev/md0 4326425568 1276006720 2830649016 32% /MD0 Sat Jun 29 23:57:24 CEST 2013 /dev/md0 4326425568 1355440016 2751215720 34% /MD0 Sat Jun 29 23:57:26 CEST 2013 /dev/md0 4326425568 1425090960 2681564776 35% /MD0 Sat Jun 29 23:57:27 CEST 2013 /dev/md0 4326425568 1474601872 2632053864 36% /MD0 Sat Jun 29 23:57:28 CEST 2013 /dev/md0 4326425568 1493627384 2613028352 37% /MD0 Sat Jun 29 23:57:32 CEST 2013 /dev/md0 4326425568 615934400 3490721336 15% /MD0 Sat Jun 29 23:57:33 CEST 2013 /dev/md0 4326425568 636071360 3470584376 16% /MD0 As you can see I start from USE of 15% and after 15 seconds I'm at 37% (I don't need to mention that the backup can not copy this huge amount of data in such a short time). After ~20 seconds the cycle closes. I'm again roughly at the same usage as earlier. The value is reasonable, ca. 35 Mb were copied. Can somebody explain to me what is going on? Does df only make an estimation of usage instead of used value?

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• For enabling SSL for a single domain on a server with muliple vhosts, will this configuration work?

  - by user1322092

  I just purchased an SSL certificate to secure/enable only ONE domain on a server with multiple vhosts. I plan on configuring as shown below (non SNI). In addition, I still want to access phpMyAdmin, securely, via my server's IP address. Will the below configuration work? I have only one shot to get this working in production. Are there any redundant settings? ---apache ssl.conf file--- Listen 443 SSLCertificateFile /home/web/certs/domain1.public.crt SSLCertificateKeyFile /home/web/certs/domain1.private.key SSLCertificateChainFile /home/web/certs/domain1.intermediate.crt ---apache httpd.conf file---- ... DocumentRoot "/var/www/html" #currently exists ... NameVirtualHost *:443 #new - is this really needed if "Listen 443" is in ssl.conf??? ... #below vhost currently exists, the domain I wish t enable SSL) <VirtualHost *:80> ServerAdmin [email protected] ServerName domain1.com ServerAlias 173.XXX.XXX.XXX DocumentRoot /home/web/public_html/domain1.com/public </VirtualHost> #below vhost currently exists. <VirtualHost *:80> ServerName domain2.com ServerAlias www.domain2.com DocumentRoot /home/web/public_html/domain2.com/public </VirtualHost> #new -I plan on adding this vhost block to enable ssl for domain1.com! <VirtualHost *:443> ServerAdmin [email protected] ServerName www.domain1.com ServerAlias 173.203.127.20 SSLEngine on SSLProtocol all SSLCertificateFile /home/web/certs/domain1.public.crt SSLCertificateKeyFile /home/web/certs/domain1.private.key SSLCACertificateFile /home/web/certs/domain1.intermediate.crt DocumentRoot /home/web/public_html/domain1.com/public </VirtualHost> As previously mentioned, I want to be able to access phpmyadmin via "https://173.XXX.XXX.XXX/hiddenfolder/phpmyadmin" which is stored under "var/www/html/hiddenfolder"

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• MySQL select query result set changes based on column order

  - by user197191

  I have a drupal 7 site using the Views module to back-end site content search results. The same query with the same dataset returns different results from MySQL 5.5.28 to MySQL 5.6.14. The results from 5.5.28 are the correct, expected results. The results from 5.6.14 are not. If, however, I simply move a column in the select statement, the query returns the correct results. Here is the code-generated query in question (modified for readability). I apologize for the length; I couldn't find a way to reproduce it without the whole query: SELECT DISTINCT node_node_revision.nid AS node_node_revision_nid, node_revision.title AS node_revision_title, node_field_revision_field_position_institution_ref.nid AS node_field_revision_field_position_institution_ref_nid, node_revision.vid AS vid, node_revision.nid AS node_revision_nid, node_node_revision.title AS node_node_revision_title, SUM(search_index.score * search_total.count) AS score, 'node' AS field_data_field_system_inst_name_node_entity_type, 'node' AS field_revision_field_position_college_division_node_entity_t, 'node' AS field_revision_field_position_department_node_entity_type, 'node' AS field_revision_field_search_lvl_degree_lvls_node_entity_type, 'node' AS field_revision_field_position_app_deadline_node_entity_type, 'node' AS field_revision_field_position_start_date_node_entity_type, 'node' AS field_revision_body_node_entity_type FROM node_revision node_revision LEFT JOIN node node_node_revision ON node_revision.nid = node_node_revision.nid LEFT JOIN field_revision_field_position_institution_ref field_revision_field_position_institution_ref ON node_revision.vid = field_revision_field_position_institution_ref.revision_id AND (field_revision_field_position_institution_ref.entity_type = 'node' AND field_revision_field_position_institution_ref.deleted = '0') LEFT JOIN node node_field_revision_field_position_institution_ref ON field_revision_field_position_institution_ref.field_position_institution_ref_target_id = node_field_revision_field_position_institution_ref.nid LEFT JOIN field_revision_field_position_cip_code field_revision_field_position_cip_code ON node_revision.vid = field_revision_field_position_cip_code.revision_id AND (field_revision_field_position_cip_code.entity_type = 'node' AND field_revision_field_position_cip_code.deleted = '0') LEFT JOIN node node_field_revision_field_position_cip_code ON field_revision_field_position_cip_code.field_position_cip_code_target_id = node_field_revision_field_position_cip_code.nid LEFT JOIN node node_node_revision_1 ON node_revision.nid = node_node_revision_1.nid LEFT JOIN field_revision_field_position_vacancy_status field_revision_field_position_vacancy_status ON node_revision.vid = field_revision_field_position_vacancy_status.revision_id AND (field_revision_field_position_vacancy_status.entity_type = 'node' AND field_revision_field_position_vacancy_status.deleted = '0') LEFT JOIN search_index search_index ON node_revision.nid = search_index.sid LEFT JOIN search_total search_total ON search_index.word = search_total.word WHERE ( ( (node_node_revision.status = '1') AND (node_node_revision.type IN ('position')) AND (field_revision_field_position_vacancy_status.field_position_vacancy_status_target_id IN ('38')) AND( (search_index.type = 'node') AND( (search_index.word = 'accountant') ) ) AND ( (node_revision.vid=node_node_revision.vid AND node_node_revision.status=1) ) ) ) GROUP BY search_index.sid, vid, score, field_data_field_system_inst_name_node_entity_type, field_revision_field_position_college_division_node_entity_t, field_revision_field_position_department_node_entity_type, field_revision_field_search_lvl_degree_lvls_node_entity_type, field_revision_field_position_app_deadline_node_entity_type, field_revision_field_position_start_date_node_entity_type, field_revision_body_node_entity_type HAVING ( ( (COUNT(*) >= '1') ) ) ORDER BY node_node_revision_title ASC LIMIT 20 OFFSET 0; Again, this query returns different sets of results from MySQL 5.5.28 (correct) to 5.6.14 (incorrect). If I move the column named "score" (the SUM() column) to the end of the column list, the query returns the correct set of results in both versions of MySQL. My question is: Is this expected behavior (and why), or is this a bug? I'm on the verge of reverting my entire environment back to 5.5 because of this.

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• FreeBSD's ng_nat stopping pass the packets periodically

  - by Korjavin Ivan

  I have FreeBSD router: #uname 9.1-STABLE FreeBSD 9.1-STABLE #0: Fri Jan 18 16:20:47 YEKT 2013 It's a powerful computer with a lot of memory #top -S last pid: 45076; load averages: 1.54, 1.46, 1.29 up 0+21:13:28 19:23:46 84 processes: 2 running, 81 sleeping, 1 waiting CPU: 3.1% user, 0.0% nice, 32.1% system, 5.3% interrupt, 59.5% idle Mem: 390M Active, 1441M Inact, 785M Wired, 799M Buf, 5008M Free Swap: 8192M Total, 8192M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 11 root 4 155 ki31 0K 64K RUN 3 71.4H 254.83% idle 13 root 4 -16 - 0K 64K sleep 0 101:52 103.03% ng_queue 0 root 14 -92 0 0K 224K - 2 229:44 16.55% kernel 12 root 17 -84 - 0K 272K WAIT 0 213:32 15.67% intr 40228 root 1 22 0 51060K 25084K select 0 20:27 1.66% snmpd 15052 root 1 52 0 104M 22204K select 2 4:36 0.98% mpd5 19 root 1 16 - 0K 16K syncer 1 0:48 0.20% syncer Its tasks are: NAT via ng_nat and PPPoE server via mpd5. Traffic through - about 300Mbit/s, about 40kpps at peak. Pppoe sessions created - 350 max. ng_nat is configured by by the script: /usr/sbin/ngctl -f- <<-EOF mkpeer ipfw: nat %s out name ipfw:%s %s connect ipfw: %s: %s in msg %s: setaliasaddr 1.1.%s There are 20 such ng_nat nodes, with about 150 clients. Sometimes, the traffic via nat stops. When this happens vmstat reports a lot of FAIL counts vmstat -z | grep -i netgraph ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP NetGraph items: 72, 10266, 1, 376,39178965, 0, 0 NetGraph data items: 72, 10266, 9, 10257,2327948820,2131611,4033 I was tried increase net.graph.maxdata=10240 net.graph.maxalloc=10240 but this doesn't work. It's a new problem (1-2 week). The configuration had been working well for about 5 months and no configuration changes were made leading up to the problems starting. In the last few weeks we have slightly increased traffic (from 270 to 300 mbits) and little more pppoe sessions (300-350). Help me please, how to find and solve my problem?

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• APC (php accelerator). What situations should I use this?

  - by matthewsteiner

  So I've just got a small vps. I've installed apc, which sped up normal pages by 20% - 30%. I was reading about memcached and came to the conclusion that I can use apc for the same thing (caching objects from database results) if I'm not distributing over other servers. Since I only have the one server, apc will be just as beneficial for caching things in memory. I'm still in development mode, and I'm sure it's hard to tell what would be best for production mode. The thing is, my database queries seem pretty fast (between .0008 and .02). None of my pages are way database intensive. Would it be beneficial to me to cache results in memory? If the database is running well right now, is it going to be having a hard time later? Also, is connecting to the database at all something that costs speed (even if I cache most of my queries, every page has to have a little database interaction for session data). So, basically if I have a limited ram, and one machine, will using apc rather than just letting the database be uncached be much faster? Ideas?

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• How to log kernel panics without KVM

  - by Spacedust

  My server is crashing and I can't find an answer why. It all started after my datacenter upgrade RAM from 16 GB to 32 GB. I also found such logs in dmesg - they've started to show itself just before the first kernel panic: EXT4-fs error (device md2): ext4_ext_find_extent: bad header/extent in inode #97911179: invalid magic - magic 5f69, entries 28769, max 26988(0), depth 24939(0) EXT4-fs error (device md2): ext4_ext_remove_space: bad header/extent in inode #97911179: invalid magic - magic 5f69, entries 28769, max 26988(0), depth 24939(0) EXT4-fs error (device md2): ext4_mb_generate_buddy: EXT4-fs: group 20974: 8589 blocks in bitmap, 54896 in gd JBD: Spotted dirty metadata buffer (dev = md2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. EXT4-fs error (device md2): ext4_ext_split: inode #97911179: (comm pdflush) eh_entries 28769 != eh_max 26988! EXT4-fs (md2): delayed block allocation failed for inode 97911179 at logical offset 1039 with max blocks 1 with error -5 This should not happen!! Data will be lost EXT4-fs error (device md2): ext4_mb_generate_buddy: EXT4-fs: group 21731: 5 blocks in bitmap, 60762 in gd JBD: Spotted dirty metadata buffer (dev = md2, blocknr = 0). There's a risk of filesystem corruption in case of system crash. My system is CentOS 5.8 64-bit with latest kernel 2.6.18-308.20.1.el5. How can I check what is the reason of kernel panic without having an access to the KVM ? I have told my datacenter admins to check the memory in the server.

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• ExpressCache not working after Windows 8 reinstall on Samsung Series 7 Gamer

  - by Morven

  I have a Samsung Series 7 Gamer laptop which came with Windows 8. After doing a reinstall of Windows, the ExpressCache software is no longer caching. Running "eccmd -info" shows me that the software is present and it has the MSATA drive partition configured. However, it's not actually caching anything. These are the results after having the system booted for days: C:\windows\system32eccmd -info ExpressCache Command Version 1.0.94.0 Copyright¬ 2010-2012 Condusiv Technologies. Date Time: 11/3/2013 12:26:20:263 (JAMETHIEL #36) EC Cache Info ================================================== Mounted : Yes Partition Size : 7.46 GB Reserved Size : 3.00 MB Volume Size : 7.46 GB Total Used Size : 86.50 MB Total Free Space : 7.38 GB Used Data Size : 16.63 MB Used Data Size on Disk : 84.38 MB Tiered Cache Stats ================================================== Memory in use : 32.00 MB Blocks in use : 136 Read Percent : 0.02% Cache Stats ================================================== Cache Volume Drive Number : 1 Total Read Count : 97242 Total Read Size : 4.13 GB Total Cache Read Count : 0 Total Cache Read Size : 595.50 KB Total Write Count : 161546 Total Write Size : 5.89 GB Total Cache Write Count : 0 Total Cache Write Size : 0 Bytes Cache Read Percent : 0.01% Cache Write Percent : 0.00% As you can see on the last two lines, cache read and write percent is nigh on zero. Anyone know where to look next? The only guides I can find deal with ExpressCache not being present or not having a configured drive.

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• Why my Ldirectord check multiple times on read server every interval?

  - by garconcn

  I have a Ldirectord server and two real servers. My ldirectord used to check the request page on real server once in every interval, but now I found that it check four times. I have monitored the log on both real servers, they have the same problem. Here is my ldirectord configuration: checktimeout=10 checkinterval=5 autoreload=yes logfile="/var/log/ldirectord.log" quiescent=no virtual=192.168.1.100:80 fallback=127.0.0.1:80 real=192.168.1.10:80 gate real=192.168.1.20:80 gate service=http request="lb.html" receive="still alive" scheduler=sh persistent=60 protocol=tcp checktype=negotiate Ldirectord will connect to each real server once every 5 seconds (checkinterval) and request 192.168.0.10:80/test.html (real/request). The access log in real server: 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805"

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• How do you initialize networking on a new Xen guest VM?

  - by Marten Veldthuis

  We have a Citrix XenServer setup, and while I personally lean more towards Dev than Ops, I've got an issue that's been bugging me. When you provision a new (Linux/Ubuntu) guest, how do you get it to have the correct IP-address? I'd want my application servers to exist in the range of 10.20.0.0/24, preferably being .1, .2, etc, so I can keep my sanity. I guess that the actual IP-address is something set in Linux itself, and Xen can't touch that, but then what's the best practice for getting it done? If you set up DHCP, don't you just move the problem to getting the adapters the "correct" MAC-addresses? Do you just have to hardcode a large table of MAC-addresses to IP-addresses, and then provision new guests always with the correct MAC-address on the virtual ethernet adapter? What we currently do is have an image of a "app server" that we boot up a new instance of, and then finalize it (with a script) that (among other things) modifies the /etc/networking/interface file to give it the correct IP. But that feels dirty to me, and I feel like surely there must a better way. Please enlighten me?

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• Massive Memory Leaks?

  - by Mads

  Hi, I seem to have huge memory leaks, which are confusing me. I'm running fusion 3.1 / Windows 7 on Snow Leopard. It's a clean install with all upgrades applied. I've given fusion 8GB on a 14GB machine. I've installed VS2008 & Eclipse in Windows 7. Nothing unusual. Inside Task Manager in Windows 7, my memory footprint stays reasonable, at <2GB. But in OSX, Activity Monitor shows the footprint of vmware-vmx to be much larger. It starts at 2 GB, which seems fine, but whenever I'm actually doing anything in Windows, vmware-vmx's footprint grows at a few MB per second. After 20 mins or so it's using ~10GB and everything grinds to a halt. Throughout this, Task Manager still says I'm only using 2GB. And whatever I do in windows seems to increase vmware-vmx's memory footprint. Even closing down an application seems to make it go up. So is this par for the course in fusion? I was previously using parallels 3 / Vista under Leopard, and it worked fine. I'd assumed my new fusion config would work better, but this makes it completely unusable. (And apparently I can't even ask tech support unless I buy a support package...) Any advice much appreciated. Thanks

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• Dir all files to output.log, including message "File Not Found"

  - by user316687

  I'm trying to dir a bunch of files with dos command: dir My dir.bat file: dir E:\documentos\57\Asiento\01\"Asiento 3 Modificacion de Estatuto.doc" dir E:\documentos\134\Asiento\01\"File Does Not Exist.doc" dir E:\documentos\55\Asiento\01\"Asiento 5 Padron de Afiliados Segunda Entrega.doc" The second one doesn't exist. Then, when running my bat: C:\myuser>E:\dir.bat > output.log I open output.log and don't find any message about the file that was not found. Output.log : E:\documentos>dir E:\documentos\57\Asiento\01\"Asiento 3 Modificacion de Estatuto.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\57\Asiento\01 20/12/2005 06:41 p.m. 40,960 Asiento 3 Modificacion de Estatuto.doc 1 File(s) 40,960 bytes 0 Dir(s) 17,053,155,328 bytes free E:\documentos>dir E:\documentos\134\Asiento\01\"File Does Not Exist.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\134\Asiento\01 E:\documentos>dir E:\documentos\55\Asiento\01\"Asiento 5 Padron de Afiliados Segunda Entrega.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\55\Asiento\01 08/08/2007 08:33 a.m. 40,960 Asiento 5 Padron de Afiliados Segunda Entrega.doc 1 File(s) 40,960 bytes 0 Dir(s) 17,053,151,232 bytes free Is there any way that output.log shows "File Not Found" message?

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• Very Slow DSL (ethernet) speed

  - by Abhijit

  I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

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• How to find out what is causing a slow down of the application on this server?

  - by Jan P.

  This is not the typical serverfault question, but I'm out of ideas and don't know where else to go. If there are better places to ask this, just point me there in the comments. Thanks. Situation We have this web application that uses Zend Framework, so runs in PHP on an Apache web server. We use MySQL for data storage and memcached for object caching. The application has a very unique usage and load pattern. It is a mobile web application where every full hour a cronjob looks through the database for users that have some information waiting or action to do and sends this information to a (external) notification server, that pushes these notifications to them. After the users get these notifications, the go to the app and use it, mostly for a very short time. An hour later, same thing happens. Problem In the last few weeks usage of the application really started to grow. In the last few days we encountered very high load and doubling of application response times during and after the sending of these notifications (so basically every hour). The server doesn't crash or stop responding to requests, it just gets slower and slower and often takes 20 minutes to recover - until the same thing starts again at the full hour. We have extensive monitoring in place (New Relic, collectd) but I can't figure out what's wrong; I can't find the bottlekneck. That's where you come in: Can you help me figure out what's wrong and maybe how to fix it? Additional information The server is a 16 core Intel Xeon (8 cores with hyperthreading, I think) and 12GB RAM running Ubuntu 10.04 (Linux 3.2.4-20120307 x86_64). Apache is 2.2.x and PHP is Version 5.3.2-1ubuntu4.11. If any configuration information would help analyze the problem, just comment and I will add it. Graphs info phpinfo() apc status memcache status collectd Processes CPU Apache Load MySQL Vmem Disk New Relic Application performance Server overview Processes Network Disks (Sorry the graphs are gifs and not the same time period, but I think the most important info is in there)

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• DXVA and ATI.... what am I missing?

  - by Shiki

  ATI Radeon HD3650 ffdshow (the one comes with CCCP 2010-10 AND the latest from Free-codecs site) Catalyst 10.12 Latest DirectX, Windows 7 HP x64 If I try to play it simply, the player (mpc-hc) won't use the acceleration. If I disable checks, I get artifacts. Back then it worked perfectly with my Intel and ATI too (Lenovo ThinkPad T500, switchable graphics). This only appeared recently. What should I do? What am I missing? If possible, I don't really want to downgrade drivers (waaa ATI drivers s.ck ... sorry but.. honestly), because the older one got a buggy DP driver so my external display gets a totally wrong resolution. Info about the media file: Video: Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Codec ID : V_MPEG4/ISO/AVC Writing library : x264 core 88 r1462 7fcffde Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=8 / psy=1 / psy_rd=0.80:0.20 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=3 / sliced_threads=0 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / wpredp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 The sample file I'm testing at the moment: [Coalgirls]_Kiddy_Girl-and_01_(1920x1080_Blu-Ray_FLAC)_[91428679].mkv (I tried many x264 files, no use.) Artifacts

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• Best practices for thin-provisioning Linux servers (on VMware)

  - by nbr

  I have a setup of about 20 Linux machines, each with about 30-150 gigabytes of customer data. Probably the size of data will grow significantly faster on some machines than others. These are virtual machines on a VMware vSphere cluster. The disk images are stored on a SAN system. I'm trying to find a solution that would use disk space sparingly, while still allowing for easy growing of individual machines. In theory, I would just create big disks for each machine and use thin provisioning. Each disk would grow as needed. However, it seems that a 500 GB ext3 filesystem with only 50 GB of data and quite a low number of writes still easily grows the disk image to eg. 250 GB over time. Or maybe I'm doing something wrong here? (I was surprised how little I found on the subject with Google. BTW, there's even no thin-provisioning tag on serverfault.com.) Currently I'm planning to create big, thin-provisioned disks - but with a small LVM volume on them. For example: a 100 GB volume on a 500 GB disk. That way I could more easily grow the LVM volume and the filesystem size as needed, even online. Now for the actual question: Are there better ways to do this? (that is, to grow data size as needed without downtime.) Possible solutions include: Using a thin-provisioning friendly filesystem that tries to occupy the same spots over and over again, thus not growing the image size. Finding an easy method of reclaiming free space on the partition (re-thinning?) Something else? A bonus question: If I go with my current plan, would you recommend creating partitions on the disks (pvcreate /dev/sdX1 vs pvcreate /dev/sdX)? I think it's against conventions to use raw disks without partitions, but it would make it a bit easier to grow the disks, if that is ever needed. This is all just a matter of taste, right?

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• Tools to manage sql 2008 database mirroring?

  - by lemkepf

  We are going to be moving about 20 databases that live on a single instance of sql 2000 to a sql 2008 r2 environment with database mirroring. What I'm looking for is a tool or scripts that will help me manage the conversion and management of those 20db's onto this new mirrored environment easily. There are many steps in setting each DB up and I want to automate as much as possible. Edit: Here are the steps I've been doing manually: Create the same username/passwords from the old sql 2000 server onto new sql 2008 server. Then sync those users/passwords onto the other sql 2008 server with the same SSID's so when we do the db backup and restore they match up. Take a backup of each sql 2000 db's. Copy them to server A. Restore the backup to server A. Backup from server a, copy to server b, restore there. Run the mirror "configure security" wizard. Start mirroring. I've love to be able to script this out or have a tool that does it for me. Thanks! Paul

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• Dedicated virtual setup is slow with WordPress

  - by kovshenin

  Hey. I'm running a Fedora linux server on the Amazon EC2 platform. I'm pretty sure there's something wrong with my configuration as it seems to be very slow. SSH sometimes takes over 30 seconds to connect, a WordPress generated web page could take 5 seconds to load, and it could take 20 seconds to load, which is pretty awkward. MySQL queries are all executed in less than a second, so I don't think that's the case. I'm not really sure where the issue lies, but a simple page written in PHP loads instantly. A fresh WordPress installation starts lagging. Same works perfect on grid hosting at MediaTemple for instance, so I'm pretty sure I missed something. If you could please direct me to the right tools and articles which would help me out. Thanks so much! Fedora Core 8, php 5.2.6, MySQL 5.0.45, OpenSSH 4.7p1, OpenSSL 0.9.8b. PHP is configured as a module to Apache 2.2.9, all websites based on virtual hosts. I have some on-going php scripts running from time to time in the background via cron. Thanks.

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• Applications randomly alt-tab? (especially full screen games)

  - by Henry Scotts

  I'm not sure when this began, how it happens, or why it happens, but it is quite bothersome and apparently random. Just randomly throughout the day my computer will just go to the desktop. I could be in a full screen game and it will just immediately alt tab and present the desktop. Or I could be watching a movie and this happens. Sometimes it happens once every three hours and other times (just today actually) it did it twice in the span of 30 seconds. I am positive I am not pressing a hotkey because I launched a game, sat idle, and noticed it alt tab while cleaning up around my room after about 20 minutes. Sometimes it goes days without this happening. Specs: Windows 7 Ultimate 64 Bit, 10 gigs of RAM, GeForce GTX 260, Intel Xeon CPU. I also have basically nothing running when it happens other than the game and FireFox. My FireFox add-ons: Adblock Plus, Download Statusbar, Firebug, FirePHP, lazarus form recovery, tree-style-tabs, yslow. I doubt FireFox is causing the issue but I figured I'd include it anyway because it is the only application I have running when it happens. As for user processes I have running: VCDDaemon (context menu for virtual clone drive), razerhid (mouse), OSD, taskhost, dmw (desktop window manager), anyfullscreengame, audiorepeater, netsession_win, explorer, razerofa, tsvncache, firefox, plugin-container, and EKIJ5000MUI (printer). Whew. Okay. That was a lot of information. If someone could diagnose this I would be most grateful for this has been around with me for years.. Thanks for reading! PS: I doubt it's a virus because I never download illegal software and pretty much only browse Reddit and Stackexchange and play games. If it was a virus it would be a pretty lame one.. Hah..

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• checksecurity / setuid changes, is this a bug or did somebody break in?

  - by Fabian Zeindl

  I received a mail by checksecurity from my ubuntu 12.04 server with the following content: --- setuid.today 2012-06-03 06:48:09.892436281 +0200 +++ /var/log/setuid/setuid.new.tmp 2012-06-17 06:47:51.376597730 +0200 @@ -30,2 +30,2 @@ - 131904 4755 2 root root 71280 Wed May 16 07:23:08.0000000000 2012 ./usr/bin/sudo - 131904 4755 2 root root 71280 Wed May 16 07:23:08.0000000000 2012 ./usr/bin/sudoedit + 143967 4755 2 root root 71288 Fri Jun 1 05:53:44.0000000000 2012 ./usr/bin/sudo + 143967 4755 2 root root 71288 Fri Jun 1 05:53:44.0000000000 2012 ./usr/bin/sudoedit @@ -42 +42 @@ - 130507 666 1 root root 0 Sat Jun 2 18:04:57.0752979385 2012 ./var/spool/postfix/dev/urandom + 130507 666 1 root root 0 Mon Jun 11 08:47:16.0919802556 2012 ./var/spool/postfix/dev/urandom First i was worried, then i realized that the change was actually 2 weeks ago, i think there was a sudo-update back then. Since checksecurity runs in /etc/cron.daily i wondered why i only get that email now. I looked into /var/log/setuid/ and found the following files: total 32 -rw-r----- 1 root adm 816 Jun 17 06:47 setuid.changes -rw-r----- 1 root adm 228 Jun 3 06:48 setuid.changes.1.gz -rw-r----- 1 root adm 328 May 27 06:47 setuid.changes.2.gz -rw-r----- 1 root root 1248 May 20 06:47 setuid.changes.3.gz -rw-r----- 1 root adm 4473 Jun 17 06:47 setuid.today -rw-r----- 1 root adm 4473 Jun 3 06:48 setuid.yesterday The obvious thing that confuses me is that the file setuid.yesterday is not from yesterday = Jun/16. Is this a bug?

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• Identifying Service Error in Fedora 16

  - by Cerin

  How do you find the cause of a failed service start in Fedora 16? The new systemctl command in Fedora 16 seems to horribly obscure any useful logging info. [root@host ~]# systemctl start httpd.service Job failed. See system logs and 'systemctl status' for details. [root@host ~]# systemctl status httpd.service httpd.service - The Apache HTTP Server (prefork MPM) Loaded: loaded (/lib/systemd/system/httpd.service; enabled) Active: failed since Thu, 21 Jun 2012 16:26:56 -0400; 1min 23s ago Process: 2119 ExecStop=/usr/sbin/httpd $OPTIONS -k stop (code=exited, status=0/SUCCESS) Process: 2215 ExecStart=/usr/sbin/httpd $OPTIONS -k start (code=exited, status=1/FAILURE) Main PID: 1062 (code=exited, status=0/SUCCESS) CGroup: name=systemd:/system/httpd.service So the first command fails...and it tells me to run another command...which simply tells me that the command returned an error code. Where's the actual error? Even more frustrating is nothing seems to have been written to the logs: [root@host ~]# ls -lah /var/log/httpd/ total 8.0K drwx------. 2 root root 4.0K Jun 21 16:19 . drwxr-xr-x. 21 root root 4.0K Jun 20 16:33 .. -rw-r----- 1 root root 0 Jun 21 16:19 modsec_audit.log -rw-r----- 1 root root 0 Jun 21 16:19 modsec_debug.log

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