Reduce CPU replacing prefork with event?

[RicardoFC]

Hi,

My server is consuming more CPU than it should, I have optimized it but yet, it is consuming a lot, even more on its peak hours (obviously).

I have a lot of sites but all of them are medium but of course, if we add all visitors let's say it has a lot of visitors. Would moving to Event from Prefork help CPU or not?

 

[cPanelMichael]

Hello,

It's difficult to know for sure if moving to the Prefork MPM will help. You may want to try temporarily enabling it and monitoring the server over a period of a few days to see if you notice a change in performance. You can review information about each MPM option at:

Multi-Processing Modules - MPMs - EasyApache 4 - cPanel Documentation

Thank you.

 

[RicardoFC]

Hello,

It's difficult to know for sure if moving to the Prefork MPM will help. You may want to try temporarily enabling it and monitoring the server over a period of a few days to see if you notice a change in performance. You can review information about each MPM option at:

Multi-Processing Modules - MPMs - EasyApache 4 - cPanel Documentation

Thank you.

Hi, it's quite the opposite, replacing prefork for Event, also, can sites broke when replacing it? I know if you do it without control panel (hosting sites manually, without cPanel) it can, but does cPanel have a system to provent that?

Thanks.

 

[cPanelMichael]

Hello,

It depends on if you have any existing Apache/PHP modules enabled that rely on the Prefork MPM. For instance, you won't be able to use DSO/Mod_Ruid2 without the Prefork MPM. The following documents show you the differences and requirements:

Multi-Processing Modules - MPMs - EasyApache 4 - cPanel Documentation
PHP Handlers - EasyApache 4 - cPanel Documentation

Thank you.