2009-03-03 15:51:52 UTC
@ali tim (alire1): yes, my server meets these requirements.
@Ryan Lathouwers (ryanlathProject Admin):
My issue looks very similar to the one described (and not solved) here:
http://www.webhostingtalk.com/showthread.php?t=670621
In short, stracing a httpd process stops on LOCK_EX:
$ strace -p 3230
06:57:12 open("/var/lib/php/session/sess_86ecf346c6f7adba93cb1077f6b95d43", O_RDWR|O_CREAT,
0600) = 44
06:57:12 flock(44, LOCK_EX
And "lsof" shows that such session files are being accessed by many httpd processes, each wanting to have an exclusive lock, which will block all other instances.
Therefore I have so many httpd processes which start, but don't die, as they're blocked waiting to access a file. Eventually it will sort out itself after 30 minutes or so, but long term, new httpd processes are created faster than the old ones are created. In turn, OOM-killer kills processes.
I found a workaround for that: in php.ini (I had it set to 1):
session.use_cookies = 0
Although I'm not sure if that's the right approach.
