Hello,

I've problem with my fpm in production server. The fpm keep hanging until
I restart the service. After restarting, the problem gone. But it will
return in a day or two. Keep it restarting won't be a solution.

When the problem exists, even ping-ing time out. I don't know where to start
investaging this. Could you help me on investigating? I believe the problem
in fpm because static file still being served by nginx. I'm currently also
online on freenode #php-fpm, if anyone who prefer using irc wanted to help.

My fpm version is 5.5.9+dfsg-1ubuntu4.6 running on ubuntu 14.04

Thanks,
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