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 Topic: mod_fcgid disable process killing |
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gijs
Joined: 27 Apr 2012
Posts: 189
Location: The Netherlands
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 Posted: Wed 03 Apr '13 1:33 Post subject: mod_fcgid disable process killing |
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Hi,
I have a server with a lot of ram(32Gb,30% used) and noticed that my php processes get killed after a few minutes of inactivity.
I don't want this because this also clears my php wincache ram cache which speeds up my website.
This is how I have my mod fcgid setup:
<IfModule mod_fcgid.c>
AddHandler fcgid-script .fcgi .php
# Where to look for the php.ini file?
FcgidInitialEnv PHPRC "C:/Progra~2/php"
FcgidInitialEnv PATH "C:/Progra~2/php;C:/WINDOWS/system32;C:/WINDOWS;C:/WINDOWS/System32/Wbem;"
FcgidInitialEnv SystemRoot "C:/Windows"
FcgidInitialEnv SystemDrive "C:"
FcgidInitialEnv TEMP "C:/WINDOWS/Temp"
FcgidInitialEnv TMP "C:/WINDOWS/Temp"
FcgidInitialEnv windir "C:/WINDOWS"
# Set PHP_FCGI_MAX_REQUESTS to greater than or equal to FcgidMaxRequestsPerProcess
# to prevent php-cgi process from exiting before all requests completed
FcgidInitialEnv PHP_FCGI_MAX_REQUESTS 1500
# Maximum requests a process should handle before it is terminated
FcgidMaxRequestsPerProcess 0
# Maximum number of PHP processes
FcgidMaxProcesses 15
FcgidOutputBufferSize 131072
FcgidProcessLifeTime 0
FcgidMinProcessesPerClass 1
FcgidMaxRequestLen 1073741824
FcgidProcessLifeTime 0
FcgidZombieScanInterval 20
FcgidMinProcessesPerClass 1
# Number of seconds of idle time before a php-cgi process is terminated
FcgidIOTimeout 64
FcgidIdleTimeout 40
FcgidConnectTimeout 16
<Files ~ "\.php$">
Options Indexes FollowSymLinks ExecCGI
AddHandler fcgid-script .php
FcgidWrapper "C:/Progra~2/php/php-cgi.exe" .php
</Files>
</IfModule>
How can I stop it from killing the php processes if my websites haven't loaded in a little while?
Also I'd like to optimize this config for more performance if possible. |
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CamaroSS
Joined: 24 Jan 2013
Posts: 78
Location: RF, Tver
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| Posted: Wed 03 Apr '13 8:38 Post subject: |
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You've set PHP_FCGI_MAX_REQUESTS to 1500, it means that PHP process itself won't handle more than 1500 requests. Set it to 0 to disable this mechanism.
FcgidIdleTimeout 40 means that the process will be terminated after 40 seconds of inactivity. Set it to 0.
For more info refer to the official mod_fcgid docs.
Personally, I think it's better to recycle FastCGI processes from time to time. |
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gijs
Joined: 27 Apr 2012
Posts: 189
Location: The Netherlands
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| Posted: Wed 03 Apr '13 15:30 Post subject: |
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Thanks I will put the FcgidIdleTimeout to 0 and increase the PHP_FCGI_MAX_REQUESTS to 2000
What would you recommend to be the optimum time to recycle a FastCGI process?
Once a day? |
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CamaroSS
Joined: 24 Jan 2013
Posts: 78
Location: RF, Tver
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| Posted: Thu 04 Apr '13 9:06 Post subject: |
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Well, my FastCGI performance setup is
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FcgidInitialEnv PHP_FCGI_MAX_REQUESTS 18000
FcgidMaxRequestLen 20971520
FcgidMaxRequestInMem 5242880
FcgidOutputBufferSize 4194304
FcgidMaxRequestsPerProcess 18000
FcgidMinProcessesPerClass 5
FcgidMaxProcesses 96
FcgidSpawnScoreUpLimit 6
FcgidTimeScore 2
FcgidConnectTimeout 5
FcgidIOTimeout 235
FcgidIdleTimeout 30
FcgidIdleScanInterval 15
FcgidBusyTimeout 245
FcgidBusyScanInterval 20
FcgidErrorScanInterval 3
FcgidZombieScanInterval 1800
FcgidProcessLifeTime 0
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18000 requests are processed in my environment in nearly 1 hour, according to the stats. Moreover, the process can be successfully terminated on SIGTERM when PHP_FCGI_MAX_REQUESTS = FcgidMaxRequestsPerProcess and both are > 0.
I also consider process spawn rate and idle timeout.
If you don't need this, you can just set
PHP_FCGI_MAX_REQUESTS,
FcgidMaxRequestsPerProcess,
FcgidIdleTimeout
to zero and set FcgidProcessLifeTime to something like 3600, so the process will serve for 1 hour.
Also adjust FcgidBusyTimeout and FcgidIOTimeout depending on presence of long-running scripts on your server (like big file uploads etc.) . |
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