I have a Wordpress application that gets decent traffic. It's been running fine for awhile but last night PHP started consuming all the CPU. Nginx connections, ram, disk i/o, etc. have not increased whatsoever, only CPU usage.
http://i.imgur.com/Z9Tt6iP.png You can see here that it suddenly shot up. That is a 24 hour view.
I do not know how to isolate the cause of this, since top just displays php5-fpm consuming the memory. I have tried restarting the server entirely, and the CPU usage stays normal for ~5 minutes, and then shoots back up again.
Is there a way I can isolate the PHP script/function that is causing the bottleneck?
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