Title: High CPU load Last modified: January 9, 2025 --- # High CPU load * Resolved [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/) * Hi, with preload CPU load increases to 100%, without preload more to 40%. I have 4 CPU cores and 8GB RAM on my server. WooCommerce store, 30,000 products, 500 categories, 44,000 attachments, only products, attachments, categories are included in the sitemap Viewing 13 replies - 1 through 13 (of 13 total) * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18235227) * I can give you some filters that would throttle the Preload; * – Using add_filter(‘wpoptimize_preload_delay’, ‘my_preload_delay_method’), you can override the delay between two pages, which is currently set at 500000 (1/ 2 a second). * – Using add_filter(‘wpo_page_cache_preload_memory_threshold’, 10485760); That filter lets you change how much memory should be left before interrupting the preload queue (10MB by default). * – Using add_filter(‘wpo_page_cache_preload_continue_interval’, 600); This filter enables to change the time before the preload resumes when interrupted (600s by Default). * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18235277) * I put this in functions.php and got an error, the site stopped working * //WP-Optimize * add_filter(‘wpoptimize_preload_delay’, ‘my_preload_delay_method’); * add_filter(‘wpo_page_cache_preload_memory_threshold’, 10485760); * add_filter(‘wpo_page_cache_preload_continue_interval’, 600); * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18237432) * Can you try adding via a snippets plugin? * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18238262) * **This didn’t help, I get an error when activating** * A critical error occurred on the site. Please check the site administrator’s inbox for instructions. If you’re still having problems, visit [the support forums](https://ru.wordpress.org/support/forums/). * [Learn more about troubleshooting WordPress issues.](https://wordpress.org/documentation/article/faq-troubleshooting/) * **There is an error in the logs** * **2025-01-11T14:31:30+00:00 Critical** Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given in/ var/www/fastuser/data/www/auhouse.ru/wp-includes/class-wp-hook.php:324 Дополнительный контекст{ “error”: { “type”: 1, “file”: “/var/www/fastuser/data/www/auhouse.ru/ wp-includes/class-wp-hook.php”, “line”: 324 }, “remote-logging”: true, “backtrace”:[“”,“# 0 /var/www/fastuser/data/www/auhouse.ru/wp-includes/plugin.php(205): WP_Hook- >apply_filters()”, “#1 /var/www/fastuser/data/www/auhouse.ru/wp-content/plugins/ wp-optimize/includes/class-wp-optimize-preloader.php(49): apply_filters()”, “# 2 /var/www/fastuser/data/www/auhouse.ru/wp-content/plugins/wp-optimize/cache/ class-wpo-page-cache.php(1535): WP_Optimize_Preloader->get_continue_preload_cron_interval()”,“# 3 /var/www/fastuser/data/www/auhouse.ru/wp-includes/class-wp-hook.php(324): WPO_Page_Cache- >cron_schedules()”, “#4 /var/www/fastuser/data/www/auhouse.ru/wp-includes/plugin. php(205): WP_Hook->apply_filters()”, “#5 /var/www/fastuser/data/www/auhouse.ru/ wp-includes/cron.php(1116): apply_filters()”, “#6 /var/www/fastuser/data/www/ auhouse.ru/wp-includes/cron.php(1014): wp_get_schedules()”, “#7 /var/www/fastuser/ data/www/auhouse.ru/wp-includes/class-wp-hook.php(324): _wp_cron()”, “#8 /var/ www/fastuser/data/www/auhouse.ru/wp-includes/class-wp-hook.php(348): WP_Hook- >apply_filters()”, “#9 /var/www/fastuser/data/www/auhouse.ru/wp-includes/plugin. php(517): WP_Hook->do_action()”, “#10 /var/www/fastuser/data/www/auhouse.ru/wp- settings.php(726): do_action()”, “#11 /var/www/fastuser/data/www/auhouse.ru/wp- config.php(62): require_once(‘…’)”, “#12 /var/www/fastuser/data/www/auhouse.ru/ wp-load.php(50): require_once(‘…’)”, “#13 /var/www/fastuser/data/www/auhouse. ru/wp-blog-header.php(13): require_once(‘…’)”, “#14 /var/www/fastuser/data/www/ auhouse.ru/index.php(17): require(‘…’)”, “#15 {main}”, “thrown” ] } * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18239256) * This filter is causing the error. * add_filter(‘wpo_page_cache_preload_continue_interval’, 600); * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18241982) * Apologies, I do not get this error when I add this to my site. * If you go into the class-wpo-load-url-task.php, you can change the following settings * [https://snipboard.io/Oe9VsG.jpg](https://snipboard.io/Oe9VsG.jpg) * Can you try either changing the value here or adding a filter to change the value? * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18242222) * Please check * This filter works – add_filter(‘wpoptimize_preload_delay’, ‘my_preload_delay_method’, 500000); * This filter works – add_filter(‘wpo_page_cache_preload_memory_threshold’, 10485760); * This filter is causing an error – add_filter(‘wpo_page_cache_preload_continue_interval’, 600); * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18246249) * Try the ones that do work for you and see if these help manage your load. * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18246268) * I’ll try to see if there is a way to disable automatic cache clearing when importing products? * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18246794) * This filter helped me to regulate the loading * add_filter(‘wpoptimize_preload_delay’, ‘my_preload_delay_method’, 500000); * Preloading works but the number of pages is shown as “Preloading posts found in sitemap: 0 out of 31661 preloaded URLs”, the value 0 does not change * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 3 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18248135) * This sounds like something different, can you post your php error logs, * Could you send me the link to your site map? * What are you using to generate your sitemap? * Thread Starter [adio93](https://wordpress.org/support/users/adio93/) * (@adio93) * [1 year, 2 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18259233) * There are no errors in the logs * [https://auhouse.ru/sitemap.xml](https://auhouse.ru/sitemap.xml) * Standard WP sitemap, no SEO plugins used - This reply was modified 1 year, 2 months ago by [adio93](https://wordpress.org/support/users/adio93/). * Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/) * (@vupdraft) * [1 year, 2 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18263873) * If you open the JS console while preloading, do you see any errors? * Can you try using Yoast to generate a sitemap to see if that makes any difference? Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘High CPU load’ is closed to new replies. * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899) * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/) * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/) * 13 replies * 2 participants * Last reply from: [vupdraft](https://wordpress.org/support/users/vupdraft/) * Last activity: [1 year, 2 months ago](https://wordpress.org/support/topic/high-cpu-load-8/#post-18263873) * Status: resolved