PHP High CPU

[garyfartsalot]

Site has slow server response time and after running atop im noticing PHP hogging the CPU. See attached image

Any ideas how to resolve this?

[abolabo]

just install xdebug php-ext and create profile.
See https://xdebug.org/docs/profiler for details.
Then open profile in the KCachegrind or some other profile analizer(for example phpstorm) and check what part of code run slow.

I don't see any other way to check.