Wordpress LScache Plugin: CPU overloaded running at 100%
Last Updated on: Wed, 15 Apr 2026 00:00:02 Im having problem with my server thats started to run 100% CPU usage, and the funny thing is that the number of users starts to drop. I disable my sites cron to check if the service starts to normalize. But the server is never balanced. How could I fix this, one possible solution is to disable the plugin. Or manually Clear all cache. But removing cache only works temporarily, after 1 hour or so were back to the same cpu state at 100%. This topic was modified 8 months, 2 weeks ago by fagworio. This topic was modified 8 months, 2 weeks ago by fagworio. This topic was modified 8 months, 2 weeks ago by fagworio. whats the output from top -c ? like what is the process that using the cpu ? Thanks for responding so quickly. Now the values are not fixed at 100% ranging between 100% or another 40% value. But I had deactivated the plugin and activated it now, so this monitoring is still very recent. Quick update, Now the values are more fixed with the CPU staying at 100% top -c htop now that is weird , how does your server set up ? I can see OLS process, but also PHP-FPM , does it like OLS ? Apache/Nginx ? PHP-FPM ? and also please provide the report number , you can get it in toolbox -> report -> click send to LiteSpeed My server is runing a Nginx Apache with PHP-FPM. I didnt understand what OLS processor means, but is a Apache/Nginx ? PHP-FPM for sure. And is runing at 8 GB RAM, 2 vCPUs, 160 GB SSD instance. This is the Report number: PSOKRPFD I was refer to this but I kind of got the idea each time when you load page , without cache , it will process everything again , and some operations like CSS minify combine , CCSS , lazyload ?etc these can be CPU intensive with cache , it only runs for once , but since your system doesnt have cache , it runs every time a page is accessed and consumes more CPU. Ok, How could I fix this? I was thinking about what your said but since your system doesnt have cache , what this means. I was thinking that the plugin generates the cache, or am I missing something on the configurations of the plugin? Hi, LiteSpeed Cache is a server-level cache plugin , which means , it only sends the cache request to webserver, and webserver , while serving the content to user, also save a cache copy , the plugin itself does NOT generate any cache object to disk and in such case, it needs LiteSpeed webserver to work with and in your case, you are using nginx/apache which wont work with our cache engine the cache wont work , but other options like page optimization still works and since there is no cache , it needs to re-do all the optimization operation again and again and again , it consumes CPU power to do so I dont really have solution , I assume you are using aapanel or aka, BT panel ? I remember that panel has OpenLiteSpeed as well , you can install and switch to OLS , then the cache will work best regards, Thanks. Yes I am using aapanel? Do you have any tutorial how to switch OLS on aapanel? I am not particularly familiar with AApanel , but I just googled out this https://forum.aapanel.com/d/1159-how-to-change-your-webserver-to-openlitespeedbeta Thanks this helps a lot.. you are the best.
LiteCache Rush: Speed comes from using less, not from doing it faster
Reference