Topic: mod_fcgid: can't apply process slot for c:/php/php-cgi.exe

[elavarasan]

Would appreciate your help

When i test the benchmark by using ab.exe tools with 500 concurrent users or more than that then in my log file its shows the following error/warning :

mod_fcgid: can't apply process slot for c:/php/php-cgi.exe

mod_fcgid: process 7204 graceful kill fail, sending SIGKILL

So how to resolve or fix this kind of issues/erros and do i need to add any values?

My Mod_Fcgid is :

LoadModule fcgid_module modules/mod_fcgid.so
FcgidInitialEnv PHPRC "c:/php"
AddHandler fcgid-script .php
FcgidWrapper "c:/php/php-cgi.exe" .php

<IfModule mpm_winnt_module>
ThreadsPerChild 1920
MaxRequestsPerChild 0
</IfModule>

Thanks,

[Kanashii]

Problem is with php respawn, if process rise the limit of MAX_REQUESTS process is respawn so need time to create new process.

So i had fix this issue by:

FcgidMaxRequestsPerProcess 0

FcgidMaxProcesses 55
DefaultMaxClassProcessCount 35

Or invent MaxProcesses 4 process like in IIS

If you benchmark your server by ab.exe and MaxProcesses is about 55. On begin of benchmark will be CPU usage very HIGH because Apache need create lot of process. So if you had too hight MaxProcesses and MaxRequestsPerProcess is too low Apache will be had problem with respawn process and create new

So tweak 2 varibles:

FcgidMaxProcesses 25
# try 4 - 25 - 130
FcgidMaxRequestsPerProcess 0

When CPu usage is about 100% will be problem with can't apply process so need increase

FcgidBusyTimeout 300
IPCConnectTimeout 300

Sorry for my English