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Troubleshooter on high CPU Usage for WordPress websites

Last updated: September 8, 2022
Estimated reading time: 2 min

Troubleshooter on high CPU Usage for WordPress websites

Currently there are multiple CPU usage problems widespread in WordPress websites. They even become more prevalent when you use shared resources or a hosting plan that doesn’t include that many resources. However, the CPU usage problems can also happen in a good hosting plan. When that happens, it slows down your website even when there are no resources to serve content to your site.

Moreover, the CPU usage problems can lead you to poor user experience and it can seriously impact your website ranking in no time.

In this article, we will learn about troubleshooting the high CPU usage for your WordPress websites. All the tricks that we utilise are simple yet easy to follow. However, you can always use a developer that can do it for you anyway. So, let’s get started!

Please follow these steps:

1)  First of all, make sure you are using the latest version of WP core, Themes as well as Plugins.
2) Secondly, check the scripts for any unauthorized modifications or unknown scripts injected in the webfiles.
3) Thirdly, change all your hosting passwords to a more complicated passwords (consists of symbols, alphanumeric characters, lower and upper case letters). E.g FTP login, Control Panel hosting login and as well as your CMS login password.
4) Scan your local computers with a well-known anti-virus software and install Microsoft Security Essential for those users’ Computers that use Windows platform.
5) Check and find the root cause by disabling the WP’s plugins that usually cause high CPU usage and check with us.
6) Consider installing this WP Plugin –> “WP Super Cache” for those websites using html pages. —> A very fast caching engine for WordPress that produces static html files.
7) Alternatively, try out another useful plugin –> “DB Cache Reloaded”. —>This plugin caches every database query within given lifetime. It is much faster than other html caching plugins and uses less disk space for caching.

Here are some tips for Best Result:

1) Check thoroughly the index.php scripts (check if there are any abnormal or injection scripts) inside this file.
2) Check and disable all your WP plugins and enable one by one to pinpoint which Plugin is causing the overload.
3) Change all your hosting (e.g FTP, WP login, or Control panel) login passwords to more complicated passwords.
4) Patch all your hosting webfiles, 3rd party apps, plugins and themes to the latest version.
5) Scan your local computer which you use to connect to the hosting with a well-known anti-virus. If you are using Windows platform – install Microsoft Security Essentials.

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