On Thu, Jun 23, 2011 at 15:27, Zaccone, Warren <wzaccone@xxxxxxxxxxxxx> wrote:
> We recently started experiencing a problem on our server (httpd 2.2.19, PHP 5.3.6) where all of the apache child processes hang in PHP code and no longer process requests.
>
> I am running Apache as prefork on Solaris 10 with 256 children, and found that within a few minutes all 256 httpd child processes are stuck, and it's always in the same place within php_session_start in a php_flock call. Stack trace is shown below.
>
> The file it is trying to flock is /var/tmp/sess_2e39aabaf226819b67f29da477892e91.
May want to consider fsck'ing that drive, Warren. You may have
some bad clusters that are causing disk I/O issues. Just one of many
possibilities, of course, but the least favorite of all, obviously.
--
</Daniel P. Brown>
Network Infrastructure Manager
http://www.php.net/
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