I have the following problem, I have 120 wordpress servers on the server, on average Load Average was 3-4%, suddenly it increased to 140% and it keeps sticking all the time. I thought it was MySQL that eats the ram but it currently uses 280.3 MB. After checking, htop shows that the most burdensome server / usr / bin / httpd or apache 2.4 what can be seen in the picture, CPU usage 100%. The server has 32GB RAM and has always consumed a maximum of 3-4GB, currently the apache itself consumes 12.30 GB, where the site has virtually zero traffic. A single page can have a CPU consumption of 35-40%. Load is displayed on the screenshoot at the level of 15%, after the restart the server is so low, after which it jumps at over 100%

Screenshot: screenshot

Any ideas, how can it be sensibly limited?

  • 1
    The most likely scenario is one of those WP blogs is getting a lot of hits. Check your access logs. If it's legit traffic, look into optimizing your WP blogs, including stuff like caching plugins.
    – ceejayoz
    Apr 23, 2019 at 20:34

1 Answer 1


Check if you are using prefork, prefork usually take more memory, Please check your selected MPM, I think something is mismatched with used MPM settings and your workload and causing CPU spikes.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.