You are experiencing high CPU usage on your server, which remains at 100% almost constantly, causing performance issues and slowing down your WordPress site. You suspect that WPML might be contributing to this issue due to its impact on category synchronization.

First, we recommend verifying whether the high CPU usage is directly related to WPML. It\'s important to monitor the CPU usage while temporarily disabling WPML to see if there is a significant change in performance. If the issue persists even after disabling WPML, it might be caused by other factors in your WordPress environment. If you confirm that WPML is the cause, please check if you are using the latest version of WPML and all related plugins, as updates often include performance improvements. Additionally, consider optimizing your WPML settings for better performance, such as adjusting the synchronization settings. If these steps do not resolve the issue, we highly recommend visiting <a href=\'https://wpml.org/known-issues/\'>our known issues page</a> to see if there are any specific advisories related to your problem. Also, ensure that you have the latest versions of all themes and plugins installed. If the problem persists or if the information provided here becomes outdated, please do not hesitate to open a new support ticket with us for further assistance. You can reach our support forum here: <a href=\'https://wpml.org/forums/forum/english-support/\'>WPML Support Forum</a>.

CPU usage 100%

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Tagged: Exception

This topic contains 3 replies, has 1 voice.

Last updated by przemyslawZ-4 3 weeks, 6 days ago.

Assisted by: Otto.

Author	Posts
May 9, 2025 at 8:30 am #17015163
przemyslawZ-4	Background of the issue: I am trying to address an issue with my WordPress site being slow. I noticed that the CPU usage on my server stays at 100% almost constantly, which is causing performance problems and slowing down the site. Symptoms: The CPU usage on my server is at 100% almost constantly, leading to performance problems and a slow site. Questions: What could be causing the CPU usage to remain at 100%? How can I resolve the performance issues and slow site caused by high CPU usage?
May 9, 2025 at 8:44 am #17015244
Bruno Kos WPML Supporter since 12/2018 Languages: English (English ) German (Deutsch ) French (Français ) Timezone: Europe/Zagreb (GMT+02:00)	Hhi, To help us identify whether WPML is contributing to the high CPU usage, could you please perform the following tests and let us know the results: 1. With WPML deactivated and all other plugins active What is the CPU usage in this case? This will help us determine if WPML is the main trigger. 2. *With only WPML plugins activated (all other plugins deactivated) and using a default WordPress theme like Twenty Twenty:** What is the CPU usage in this scenario? This will help us see if WPML is causing the issue on its own or if there’s a conflict with another plugin or your current theme. These tests will give us a clearer picture of whether the issue is due to WPML directly, or a combination of WPML with other plugins or the theme. Please let us know the results when you have a chance!
May 9, 2025 at 9:04 am #17015376
przemyslawZ-4	1. It varies between 34% and 95% (av. 60%~) 2. It varies between 56% and 95% (av. 80%~)
May 12, 2025 at 12:15 pm #17022850
Otto WPML Supporter since 09/2015 Languages: English (English ) Spanish (Español ) Timezone: America/Argentina/Buenos_Aires (GMT-03:00)	Hello, I apologize for the delay in responding. I will take care of this ticket; the reply time will be shorter now. The peaks in CPU usage do not seem related to WPML. Why do you think WPML is the root cause? Can you please elaborate on that? Best Regards, Otto
May 13, 2025 at 8:49 am #17025925
przemyslawZ-4	All performance plugins indicated that WPML was burdening the entire WordPress site. The issue was related to category synchronization, which was being changed, and it resolved itself after two days.