On Fri, Oct 14, 2016 at 9:15 PM, Jérémie BORDIER <jeremie.bord...@gmail.com>
> I don't really know how to investigate further. If you have any
> pointers on how to help figuring out what's wrong, I'd love to try.

I would breakout the Linux perf command for something like this.

Run it like this:

perf record -p <pid_of_a_php-fpm_process> -g

Let that run for some arbitrary amount of time. Start with 10 seconds, or
so. Then:

perf report -n

That should give you a nice report of what your php-fpm process did for
those 10 seconds. Now do the same thing when you see the problem and
compare the reports.


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