mmap cache can't open - Too many open files

[PixyPumpkin]

I have Plesk (psa v8.0.1 RedHat el3) server running and get the following errors () in the Apache logs (/etc/httpd/logs/error_log)

[warn-phpd] mmap cache can't open /bla/bla/*.php - Too many open files (pid xx)

This error comes back for all PHP files

My customers receive al kind of PHP errors, and after a F5 it works again, 2 sec later it doesn’t

Is this because I have 519 (x2 = > 1024) Domains on the Plesk server? so the Apache limits should be raised? How can I do this? Are the Kernels which are ready to go? Are there other solutions by building one combined log for all 519 customers in stead of 519 x 2?

Thx in advance for helping out…

 

[eugenevdm]

Similar problem, found some good solutions using Google here:

http://www.webhostingtalk.com/showthread.php?t=703147
http://support.theplanet.com/kb/ope...e-server-my-linux-server-and-seeing-error-mes
http://www.linuxquestions.org/quest...cant-open-foo.php-too-many-open-files-631033/

Bottom line:
In console, type ulimit -n to see current open file limit.

Edit the apache startup script, /etc/init.d/httpd and add this before anything else:

#Raise the ulimit
ulimit -n 20480

But if your server is already opening so many files you might want to consider the load on it ;-)