{"id":8176,"date":"2026-10-13T02:41:50","date_gmt":"2026-10-13T01:41:50","guid":{"rendered":"https:\/\/harmonweb.com\/blog\/?p=8176"},"modified":"2026-10-13T02:44:42","modified_gmt":"2026-10-13T01:44:42","slug":"why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it","status":"publish","type":"post","link":"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/","title":{"rendered":"Why Your WordPress Website Uses So Much CPU and How to Reduce It"},"content":{"rendered":"<p>High CPU utilization may lead to a sluggish performance of a WordPress website, resource limitations, and frequent site outages. You will find that your <a href=\"https:\/\/harmonweb.com\/blog\/how-to-speed-up-a-slow-wordpress-website\/\" target=\"_blank\" rel=\"noopener\">site is loading slowly<\/a>, the WordPress Dashboard is becoming unresponsive, or that your host is giving you <a href=\"https:\/\/harmonweb.com\/blog\/how-to-check-your-websites-resource-usage-in-cpanel\/\" target=\"_blank\" rel=\"noopener\">warnings about resource overuse<\/a>.<\/p>\n<p>However, this doesn\u2019t necessarily mean that your website has exceeded its hosting package limits. A poor performing plug-in, frequent database queries, an uncached request, bots, and poorly configured background processes may cause WordPress to use more CPU power than needed.<\/p>\n<p>Knowing what causes the high CPU usage is key to solving the issue. One has to determine what is using the resources to determine if they need to optimize WordPress, change their settings, or upgrade their hosting.<\/p>\n<p>The following is a guide on why there are high CPU usages on your WordPress server, how to determine this, and what can be done about it.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6acdae4d95b9c\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6acdae4d95b9c\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#Why_Does_the_CPU_Usage_Spike_Up_on_WordPress\" >Why Does the CPU Usage Spike Up on WordPress?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#1_Inefficient_Database_Queries\" >1. Inefficient Database Queries<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#2_Excessive_Traffic_and_Bot_Traffic\" >2. Excessive Traffic and Bot Traffic<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-2\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#3_WordPress_Plugins_That_Consume_Many_Resources\" >3. WordPress Plugins That Consume Many Resources<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-3\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#4_Too_Many_Uncached_Requests\" >4. Too Many Uncached Requests<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-4\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#5_Outdated_PHP_or_Poor_Server_Settings\" >5. Outdated PHP or Poor Server Settings<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-5\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#6_Theme_or_Custom_Function_Optimization\" >6. Theme or Custom Function Optimization<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-6\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#7_WordPress_Cron_Jobs_and_Background_Processes\" >7. WordPress Cron Jobs and Background Processes<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_diagnose_the_problem-7\" >How to diagnose the problem<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#Reducing_CPU_Usage_of_WordPress\" >Reducing CPU Usage of WordPress<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#1_Identify_the_Process_Using_CPU\" >1. Identify the Process Using CPU<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#2Configuring_Page_and_Object_Caching\" >2.Configuring Page and Object Caching<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#3Manage_Background_Task_Execution_and_Bot_Traffic\" >3.Manage Background Task Execution and Bot Traffic<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#4_EliminateReplace_Unnecessary_Plugins\" >4. Eliminate\/Replace Unnecessary Plugins<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#5_Optimize_Database_Operations\" >5. Optimize Database Operations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#6_Upgrade_PHP_and_Analyze_the_Hosting_Capability\" >6. Upgrade PHP and Analyze the Hosting Capability<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#WordPress_CPU_Problem_Diagnosis_Techniques\" >WordPress CPU Problem Diagnosis Techniques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#How_to_know_if_Your_Fix_Worked\" >How to know if Your Fix Worked<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#Conclusion\" >Conclusion<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/harmonweb.com\/blog\/why-your-wordpress-website-uses-so-much-cpu-and-how-to-reduce-it\/#Looking_for_a_Web_Hosting_Service_for_Your_WordPress_Website\" >Looking for a Web Hosting Service for Your WordPress Website?<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Why_Does_the_CPU_Usage_Spike_Up_on_WordPress\"><\/span>Why Does the CPU Usage Spike Up on WordPress?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>WordPress uses PHP to execute the application, access the database, use plug-ins and make dynamic web pages. In cases where there are more requests which have more processing to do, CPU usage is bound to rise rapidly.m<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Inefficient_Database_Queries\"><\/span>1. Inefficient Database Queries<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The WordPress system uses its database to get posts, settings, user info, metadata, and plugin info. <a href=\"https:\/\/harmonweb.com\/blog\/how-to-optimize-your-websites-database-for-faster-performance\/\" target=\"_blank\" rel=\"noopener\">Queries that are inefficient<\/a>, no indexes, bigger databases, or more than one database lookups can cause increase in processing overhead.<\/p>\n<p>Example: A plugin that does some expensive queries for every single request may become resource-intensive as the number of requests increases. A big database does not necessarily mean an inefficient one; it depends on how the queries were made.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Use appropriate query profiling tool in a secure environment in order to detect slow and repetitive queries.<\/li>\n<li>Prior to removing the records from the database or changing the structure of the database, examine database indexing and plugin.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2_Excessive_Traffic_and_Bot_Traffic\"><\/span>2. Excessive Traffic and Bot Traffic<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>An abrupt surge of real users can cause overloading of the computer capacity of a website. The same effect can be caused by automated bot traffic when bots keep requesting pages, submitting forms, scanning links, or logging in.<\/p>\n<p>Queries directed to \u201cwp-login.php\u201d, \u201cxmlrpc.php\u201d, and \u201cadmin-ajax.php\u201d could possibly be checked out if they occur quite often. However, there are legitimate reasons why they would exist as well.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-2\"><\/span><span style=\"color: #000000\"><span style=\"color: #ff0000\"><span style=\"color: #000000\">How to diagnose the problem<\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Check whether the requests <span style=\"color: #000000\">are<\/span> being made repeatedly by the same parties or not.<\/li>\n<li>Rate limiting, web application firewall, or bot protection is recommended when necessary.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_WordPress_Plugins_That_Consume_Many_Resources\"><\/span>3. WordPress Plugins That Consume Many Resources<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Plugins help expand the capabilities of WordPress but there are plugins that perform <a href=\"https:\/\/harmonweb.com\/blog\/common-web-hosting-problems-and-how-to-fix-them\/\" target=\"_blank\" rel=\"noopener\">resource-heavy tasks<\/a> every time a page is loaded or an action is executed by the user. Examples include search plugins, analytic plugins, security scanners, backup plugins, and page builders.<\/p>\n<p>This may become a particularly big problem if the plug-in accesses the database, processes a lot of data, or carries out unnecessary processing of the request.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-3\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Check newly installed and updated plugins.<\/li>\n<li>Disable each of them separately on the staging server and analyze the CPU utilization with similar amount of visitors coming.<\/li>\n<li>Simply having the plugin installed doesn\u2019t mean it is the cause; you need to confirm the findings.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4_Too_Many_Uncached_Requests\"><\/span>4. Too Many Uncached Requests<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If a user asks for a page that is not loaded from the cache, WordPress may have to process PHP, configure it, load plugins, access the database, and create a response.<\/p>\n<p>If you ask repeatedly for the same dynamically generated data, then the load may increase even further. Bad cache settings, regular purging of the cache, and pages that are not cached may cause even more trouble.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-4\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Make sure your <a href=\"https:\/\/harmonweb.com\/blog\/best-free-and-paid-caching-plugins-for-wordpress-hosting\/\" target=\"_blank\" rel=\"noopener\">caching plugin<\/a> or hosting interface has activated page caching.<\/li>\n<li>Review information about cache hits and find out which pages call PHP often.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5_Outdated_PHP_or_Poor_Server_Settings\"><\/span>5. Outdated PHP or Poor Server Settings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The efficiency of processing requests may be affected by outdated PHP version or poor settings of the server that WordPress is running on.<\/p>\n<p>There could be an increase in CPU usage in case you share the server with some other processes. Shared hosting plans usually have resource restrictions on how much processing time your plan can use.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-5\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Start by <a href=\"https:\/\/harmonweb.com\/blog\/how-to-switch-php-versions-in-your-hosting-control-panel\/\" target=\"_blank\" rel=\"noopener\">checking your PHP version<\/a> and graphing the resources of your hosting account, as well as looking at error logs and process statistics.<\/li>\n<li>Request your hosting provider\u2019s assistance to see if you are facing prolonged CPU saturation or any other limitations of the hosting account itself.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"6_Theme_or_Custom_Function_Optimization\"><\/span>6. Theme or Custom Function Optimization<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Inefficiencies with a theme or custom function may generate excessive database queries, process lots of data or perform an expensive operation on each page load.<\/p>\n<p>The problem may become apparent following an upgrade of the theme, changes to the code, or customization of your website.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-6\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>See what changes occur in the resource usage before and after recent modifications<\/li>\n<li>Test another theme on a staging website, analyze custom code and look for redundant queries, inefficient loops, and other extra processing.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"7_WordPress_Cron_Jobs_and_Background_Processes\"><\/span>7. WordPress Cron Jobs and Background Processes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In WordPress, <a href=\"https:\/\/harmonweb.com\/blog\/how-to-fix-wordpress-cron-jobs-not-working\/\" target=\"_blank\" rel=\"noopener\">WP-Cron<\/a> is used to manage scheduled tasks such as posting a scheduled post as well as executing some actions of plugins. The problem is that by default, WordPress performs checks during page loads, thus making additional workload for the server.<\/p>\n<p>Other background processes such as backups, e-mail processing, data import, security scanning, etc., might require CPU time as well.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_diagnose_the_problem-7\"><\/span>How to diagnose the problem<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul style=\"list-style-type: square\">\n<li>Examine schedule, backup schedule and task queue for plugins.<\/li>\n<li>See if there is any overlap, repetitions of failure or excessively long processing time for tasks.<\/li>\n<li>Where appropriate set up a server cron to run WordPress scheduled events rather than using requests from visitors.<\/li>\n<li>Never disable WP-Cron unless you set up an alternative.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Reducing_CPU_Usage_of_WordPress\"><\/span>Reducing CPU Usage of WordPress<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Once the probable source is determined, apply the appropriate solution instead of tinkering with many settings at once.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"1_Identify_the_Process_Using_CPU\"><\/span>1. Identify the Process Using CPU<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Begin with your hosting control panel. Check whether you can view any graphs or other information about your CPU usage and traffic when the problem occurs.<\/p>\n<p>Associate this data with your activity on WordPress, plugin updates, scheduled events, and login logs. If you don\u2019t have enough data available through your hosting control panel, request your host to provide you with account-specific diagnostic details.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"2Configuring_Page_and_Object_Caching\"><\/span>2.Configuring Page and Object Caching<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Page caching is the process whereby eligible page responses are stored in order for WordPress not to have to reproduce them for every visitor.<\/p>\n<p>Database lookups could be avoided when <a href=\"https:\/\/harmonweb.com\/blog\/what-is-object-caching-redis-vs-memcached-explained\/\" target=\"_blank\" rel=\"noopener\">object caching<\/a> is implemented properly. Caching by the browser and CDN can also help avoid requests to the origin server for eligible static resources.<\/p>\n<p>Logged-in users, shopping carts, and other such personal data should be handled properly. Caching should not make private information visible to other users.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"3Manage_Background_Task_Execution_and_Bot_Traffic\"><\/span>3.Manage Background Task Execution and Bot Traffic<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Schedule background resource intensive activities such as backup, import, and scan to not coincide with the peak traffic hours. Identify failed tasks that keep on retrying.<\/p>\n<p>Restrict access but make sure that legitimate clients and search engines can still access your site. Do this in a way that allows your customers, search engines, and applications to function correctly.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"4_EliminateReplace_Unnecessary_Plugins\"><\/span>4. Eliminate\/Replace Unnecessary Plugins<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Turn off unnecessary plugins and examine those that may be linked to performance issues. Replace functionality that is inefficient after testing reveals it to be a problem.<\/p>\n<p>Never assume that simply deleting the database table and adding an index will solve your problem. If the issue is persistent, it may be necessary for the developer or web host to examine the code behind the scene.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"5_Optimize_Database_Operations\"><\/span>5. Optimize Database Operations<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Pinpoint costly queries before embarking on any database optimization tasks. Get rid of data that is not needed only when you have established that it is okay to delete.<\/p>\n<p>Database table deletion or index addition should not be done blindly without knowing their purpose. In case there is any issue with querying that remains unsolved, then the problem might lie in the code itself.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"6_Upgrade_PHP_and_Analyze_the_Hosting_Capability\"><\/span>6. Upgrade PHP and Analyze the Hosting Capability<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>The PHP that you choose to use should be compatible with the version of WordPress that you are running. In case of high CPU consumption even after the optimization of your website, consider if your plan has enough resources to cope with the workload of the site.<\/p>\n<p>There are different resource allocations on shared hosting, and \u201c<a href=\"https:\/\/harmonweb.com\/blog\/shared-servers-resources\/\" target=\"_blank\" rel=\"noopener\">understanding how shared server resources work<\/a>\u201d will be helpful.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"WordPress_CPU_Problem_Diagnosis_Techniques\"><\/span>WordPress CPU Problem Diagnosis Techniques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are various signs of CPU issues in WordPress, based on the underlying activities taking place. What is important is to link the signs observed to the possible causes of such issues.<\/p>\n<table style=\"border-collapse: collapse;width: 100%\">\n<tbody>\n<tr>\n<td style=\"width: 25%;text-align: center\"><strong>Your observation<\/strong><\/td>\n<td style=\"width: 25%;text-align: center\"><strong>Possible Cause<\/strong><\/td>\n<td style=\"width: 25%;text-align: center\"><strong>Things to check<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">CPU usage is high after the installation of a plugin.<\/td>\n<td style=\"width: 25%\">Plugin could be doing resource-intensive things.<\/td>\n<td style=\"width: 25%\">Check the CPU usage on the staging environment with the plugin installed.<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">Request for login page comes multiple times.<\/td>\n<td style=\"width: 25%\">Automated bots or login attempts multiple times.<\/td>\n<td style=\"width: 25%\">Analyze access log files and use appropriate rate limiting mechanism or protection against bots.<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">Dashboard in WordPress slows down.<\/td>\n<td style=\"width: 25%\">Expensive queries on database, ineffective plugins or background processes.<\/td>\n<td style=\"width: 25%\">Review slow queries and analyze recent changes.<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">Resource limitation error messages displayed in cPanel.<\/td>\n<td style=\"width: 25%\">CPU, memory, process, or any other account limits may have been exceeded.<\/td>\n<td style=\"width: 25%\">Find out the particular limit which is being exceeded by checking the hosting resources.<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">Pages become slow during traffic peaks.<\/td>\n<td style=\"width: 25%\">High cost queries, ineffective plugins, or background tasks<\/td>\n<td style=\"width: 25%\">\u00a0Find out which queries cause slowdowns, check for any recent changes, and locate resource-intensive processes.<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%\">CPU usage increases at intervals<\/td>\n<td style=\"width: 25%\">Certain scheduled actions, backup, or some other background job<\/td>\n<td style=\"width: 25%\">Examine the WP-Cron jobs, the backup schedule, and plugins actions.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Just one of many examples: an error caused by limited resources does not necessarily mean that there is too much CPU activity. In the case of memory shortage, there should be a completely different strategy used than in the case of CPU overload or process limitations.<\/p>\n<p>In case the error occurs within cPanel, this tutorial for solving the &#8220;Resource Limit Is Reached&#8221; error in cPanel will come in handy.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_know_if_Your_Fix_Worked\"><\/span>How to know if Your Fix Worked<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>You have to be sure that the solution has indeed helped lower CPU load without introducing new issues.<\/p>\n<ul style=\"list-style-type: square\">\n<li>You should test your website for similar loads of traffic after implementing the fix.<\/li>\n<li>You will have to compare all of the parameters with those from before. If the site outperforms the other under similar conditions, then you are more confident about the improvement.<\/li>\n<li>Whenever possible, run a test for any major change in the staging environment. Load testing can be performed in an iterative fashion to know how your website responds to traffic.<\/li>\n<li>Make notes of the changes you are making and the outcomes you are getting.<\/li>\n<li>In case the CPU usage is still high, pass on the required details, i.e., time stamps, resource graph, errors and recent website changes to your hosting provider. The details will be useful in determining whether the issue comes from WordPress, the incoming traffic, or your hosting environment.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>High CPU utilization in WordPress is an alarm bell, but it doesn\u2019t indicate precisely what is causing this issue. A heavy use plugin, PHP code running repeatedly, poor SQL queries, scheduled jobs, or automated traffic could be the cause of this problem.<\/p>\n<p>Nevertheless, in case CPU utilization still gets to its limit when there is regular traffic on your site despite all optimizations you have made, then it becomes necessary for you to upgrade to a new hosting solution that will be able to provide the needed resources.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Looking_for_a_Web_Hosting_Service_for_Your_WordPress_Website\"><\/span>Looking for a Web Hosting Service for Your WordPress Website?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>As you grow your website, you&#8217;ll need more resource requirements. HarmonWeb is here to assist you in considering d<a href=\"https:\/\/harmonweb.com\/blog\/types-of-web-hosting\/\" target=\"_blank\" rel=\"noopener\">ifferent web hosting services<\/a> that will fit your requirements. Select the <a href=\"https:\/\/harmonweb.com\/web-hosting-in-nigeria\" target=\"_blank\" rel=\"noopener\">right web hosting package<\/a> that offers the necessary resources to your website.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>High CPU utilization may lead to a sluggish performance of a WordPress website, resource limitations, and frequent site&hellip;<\/p>\n","protected":false},"author":25,"featured_media":8186,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[251],"tags":[],"class_list":["post-8176","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Your WordPress Website Uses So Much CPU and How to Reduce It | HarmonWeb<\/title>\n<meta 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