| Author |
Message |
Forum: Web Servers and Web App Development Topic: Help required fine tunning apache |
| OZ |
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Posted: Sat Jun 25, 2011 4:16 am
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Replies: 9
Views: 4696
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| ... file /etc/apache2/apache2.conf: turn off KeepAlive: KeepAlive Off "prefork" is default variant, so find "IfModule mpm_prefork_module" ... mpm_prefork_module> StartServers 3 MinSpareServers 3 MaxSpareServers 5 MaxClients 85 MaxRequestsPerChild 4000 </IfModule> "MaxClients ... |
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Forum: Performance and Tuning Topic: Barley any free memory, but top doesn't indicate as such |
| bkosborne |
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Posted: Tue Jun 21, 2011 9:16 pm
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Replies: 6
Views: 4203
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| I'm running CentOS obs: I went into httpd.conf and changed my prefork settings to this: <IfModule prefork.c> StartServers 2 MinSpareServers 2 MaxSpareServers 4 ServerLimit 13 MaxClients 13 MaxRequestsPerChild 4000 </IfModule> My linode has 512MB RAM, and each ... |
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Forum: Performance and Tuning Topic: Lots of questions! |
| hoopycat |
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Posted: Thu May 12, 2011 9:29 pm
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Replies: 2
Views: 3555
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| ... I ran "httpd -l" and got this; Compiled in modules: core.c prefork.c http_core.c mod_so.c So it sounds like I'm using PHP5 in a CGI, ... premature optimization. Outside of a few specific cases (like adjusting MaxClients in apache's configuration), it's difficult to know what problems ... |
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Forum: Performance and Tuning Topic: Linode OOM, IO Spikes and CPU Spikes |
| JshWright |
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Posted: Thu May 05, 2011 7:17 pm
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Replies: 4
Views: 3661
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| Assuming you're using Apache's Prefork MPM, what is your current MaxClients value in your Apache config? |
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Forum: Performance and Tuning Topic: My server crashed when tested with Siege... why? |
| JshWright |
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Posted: Wed May 04, 2011 6:47 pm
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Replies: 4
Views: 3347
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You ran out of memory, so OOMKiller started shooting random processes, which is why it stayed unresponsive... something important got killed.
You should reduce the MaxClients setting in your Apache config (in the <prefork> section) to something like 15. |
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Forum: Performance and Tuning Topic: No Traffic but I/O Spikes, OOMs, Crashes |
| akerl |
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Posted: Mon May 02, 2011 9:30 am
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Replies: 9
Views: 5458
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You either need to edit the prefork or worker section, depending on which MPM you are using. You won't be using both at once.
I'd recommend dropping MaxClients down to 5, and seeing what happens. |
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Forum: Performance and Tuning Topic: OOMing |
| kiranpvsr |
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Posted: Thu Apr 28, 2011 8:32 am
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Replies: 5
Views: 4147
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| Apache is running as prefork. Size of the Linode is 16GB. Contents of apache2.conf are as below : # # Timeout: ... spare # MaxSpareServers: maximum number of server processes which are kept spare # MaxClients: maximum number of server processes allowed to start # MaxRequestsPerChild: ... |
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Forum: Performance and Tuning Topic: MaxClients and MaxRequestsPerChild on MPM Prefork |
| edbloom |
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Posted: Thu Apr 14, 2011 3:08 pm
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Replies: 12
Views: 11533
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| ... proving invaluable. I've currently got a Linode 512 running Apache MPM Prefork, PHP, Mysql and a send only exim mailer. No fancy apache mods either. ... mpm_prefork_module> StartServers 2 MinSpareServers 2 MaxSpareServers 5 MaxClients 30 ServerLimit 30 MaxRequestsPerChild 4000 </IfModule> Keepalives ... |
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Forum: Web Servers and Web App Development Topic: Need help diagnosing high disk IO and site down |
| i<3techno |
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Posted: Thu Mar 31, 2011 4:53 am
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Replies: 6
Views: 3712
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| ... way to sort the process list but I never found out how! Set your apache MaxClients to 20 and restart apache. Ok, Unless there's another config file ... 15 ## ## Server-Pool Size Regulation (MPM specific) ## # prefork MPM # StartServers: number of server processes to start # MinSpareServers: ... |
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Forum: Performance and Tuning Topic: Apache Crashing every few days on Linode 512 |
| bhuwan |
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Posted: Tue Mar 29, 2011 11:31 am
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Replies: 2
Views: 3391
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| ... = 1M query_cache_size = 12M httpd conf (Just changed this) <IfModule prefork.c> StartServers 5 MinSpareServers 5 MaxSpareServers 5 ServerLimit 256 MaxClients 25 MaxRequestsPerChild 1000 </IfModule> KeepAliveTimeout 2 |
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Forum: Performance and Tuning Topic: Set up Debian Apache web server for 250 users |
| obs |
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Posted: Tue Mar 29, 2011 8:08 am
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Replies: 15
Views: 9136
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| From http://httpd.apache.org/docs/2.2/mod/mpm_common.html#maxclients The MaxClients directive sets the limit on the number of simultaneous ... the connection will then be serviced. For non-threaded servers (i.e., prefork), MaxClients translates into the maximum number of child processes that ... |
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Forum: Performance and Tuning Topic: Tuning LEMP on a Linode 1536 |
| Moses |
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Posted: Sun Mar 27, 2011 10:44 pm
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Replies: 16
Views: 8996
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| ... $ apache2 -l Compiled in modules: core.c mod_log_config.c mod_logio.c prefork.c http_core.c mod_so.c The following modules are enabled: $ a2dismod ... maximum number of server processes which are kept spare # MaxClients: maximum number of server processes allowed to start # MaxRequestsPerChild: ... |
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Forum: General Discussion Topic: Websites would stop responding, but SSH still on |
| cloudry |
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Posted: Sat Mar 05, 2011 9:06 pm
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Replies: 43
Views: 18436
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| No problem guys. All great help. I'm running mpm_prefork_module, and MaxClients is 24. # # Based upon the NCSA server configuration files originally by Rob McCool. # # ... |
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Forum: Web Servers and Web App Development Topic: mpm-itk spare servers?? |
| wipeout |
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Posted: Sat Feb 05, 2011 5:29 am
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Replies: 4
Views: 2942
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| You can reduce maxclients, but mpm-itk is based on mpm-prefork. It can only handle one client per process. This is horribly inefficient. Are you *SURE* that you need ... |
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Forum: General Discussion Topic: [SOLVED] Need to figure out why Linode is crashing |
| warmowski |
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Posted: Sat Feb 05, 2011 2:37 am
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Replies: 5
Views: 3336
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| - attempted to move to apache2-mpm-worker, but rolled back to prefork (reinstalling phplib5 in the process) What is MaxClients set to in your apache2.conf? As a rough guess, for prefork I'd suggest starting at ... |
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