January 25

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Opening multiple WordPress admin windows for sites on a shared host results in high CPU usage.

By Christopher G Mendla

January 25, 2018

Cpanel, WordPress Optimization

Last Updated on January 19, 2020 by Christopher G Mendla

I have a few sites that I am trying to grow on a shared host. I noticed that when I open admin windows for about five of the sites, the CPU maxes out.

I sometimes find the need to have WordPress admin windows open for several sites on the same host. For example, If I want to check the plugins that are installed to make sure I have all the plugins I want on all the sites. Another example would be to look at the settings for a particular plugin on one site and apply those to other sites.

There is a definite correlation between the number of open WordPress admin windows and CPU Usage. As soon as I open a couple of admin panels, the CPU usage as shown in my cPanel goes to 100 percent.  There could be a number of factors influencing this:

  • The configuration of your hosting, especially CPU and Ram provided by your hosting company.
  • The plugins that are active on the WordPress sites.
CPU Usage before opening admin panels for five WordPress sites on the same host.
CPU Usage before opening admin panels for five WordPress sites on the same host.
CPU usage after opening WordPress admin panels for five sites
CPU usage after opening WordPress admin panels for five sites

Summary:

  • As soon as traffic increases, I will outgrow my current hosting plan
  • I don’t want to add any more sites to this shared hosting (I was not planning to)
  • I have to look at caching. I’m not sure if that will reduce CPU load or not.
  • I need to make a note to close the admin windows when I’m done with them.

Christopher G Mendla

About the author

A web developer living in Southampton, PA

Self motivated critical thinker and problem solver providing technology consulting services.

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