{"id":18095,"date":"2026-09-29T02:08:19","date_gmt":"2026-09-29T08:08:19","guid":{"rendered":"https:\/\/www.supportpro.com\/blog\/?p=18095"},"modified":"2026-09-29T02:09:07","modified_gmt":"2026-09-29T08:09:07","slug":"aws-ec2-cpu-at-100-a-complete-troubleshooting-guide","status":"publish","type":"post","link":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/","title":{"rendered":"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An AWS EC2 instance running at 100% CPU usage can quickly become a serious performance problem. Websites may respond slowly, applications can become unresponsive, SSH sessions may lag, and background services can begin timing out. However, high CPU utilization does not always mean that the server is overloaded or failing. In some cases, the workload is expected, while in others, it may indicate a misconfigured application, runaway process, insufficient instance capacity, or even unwanted activity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains how to identify the cause of 100% CPU usage on an Amazon EC2 instance and the steps you can take to resolve it safely.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Does 100% CPU Usage Mean on EC2?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CPU utilization represents how much of the available processor capacity an instance is consuming. When CloudWatch reports CPU utilization close to 100%, the instance is using nearly all of its allocated CPU resources.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, an application performing intensive data processing may legitimately consume a large amount of CPU. On the other hand, a web server that normally uses 20% CPU but suddenly reaches 100% could indicate a problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common causes include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPU-intensive applications or scripts<\/li>\n\n\n\n<li>Sudden increases in website traffic<\/li>\n\n\n\n<li>Database queries consuming excessive resources<\/li>\n\n\n\n<li>Runaway or stuck processes<\/li>\n\n\n\n<li>Software compilation or scheduled tasks<\/li>\n\n\n\n<li>Malware or unauthorized processes<\/li>\n\n\n\n<li>Insufficient EC2 instance capacity<\/li>\n\n\n\n<li>CPU credit exhaustion on burstable instances<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Before taking action, identify what is actually consuming the CPU.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 1: Check CPU Utilization in CloudWatch<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The first place to investigate is Amazon CloudWatch. Check the EC2 instance&#8217;s <strong>CPU Utilization<\/strong> metric and determine when the spike started.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Look for patterns such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A sudden spike at a specific time<\/li>\n\n\n\n<li>CPU usage increasing gradually<\/li>\n\n\n\n<li>Consistently high utilization<\/li>\n\n\n\n<li>Repeated spikes at regular intervals<\/li>\n\n\n\n<li>CPU reaching 100% during scheduled jobs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Compare CPU usage with other metrics, including network traffic, disk activity, and instance status. A CPU spike that coincides with increased traffic may be workload-related, while an unexplained spike requires deeper investigation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the problem occurs only periodically, review scheduled tasks such as cron jobs, backups, log processing, and application maintenance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 2: Identify the Process Consuming CPU<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once you connect to the Linux-based EC2 instance through SSH, inspect the running processes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The top command provides a real-time overview:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">top<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a more convenient process view, you can also use:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">htop<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Look at the %CPU column and identify processes consuming unusually high amounts of processor resources.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can also run:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ps aux &#8211;sort=-%cpu | head<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This displays the processes with the highest CPU consumption.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pay attention to application processes, web servers, database services, PHP workers, container processes, and unfamiliar binaries.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 3: Determine Whether the High CPU Is Expected<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Not every high-CPU process needs to be terminated.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, CPU-intensive activity may be legitimate when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A large database query is running<\/li>\n\n\n\n<li>A software package is being compiled<\/li>\n\n\n\n<li>A video or image-processing task is executing<\/li>\n\n\n\n<li>A backup is being generated<\/li>\n\n\n\n<li>A batch-processing job is running<\/li>\n\n\n\n<li>A deployment is underway<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Before stopping a process, determine what started it and whether it is part of a legitimate workload.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a known application consistently consumes most of the available CPU, the solution may be optimization or scaling rather than simply terminating the process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 4: Check for Runaway Processes<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A runaway process may consume CPU continuously without performing useful work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ps aux &#8211;sort=-%cpu<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a process is consuming excessive resources, investigate its parent process and command line.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ps -fp &lt;PID&gt;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Replace &lt;PID&gt; with the process ID you want to investigate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Review application logs to determine why the process is running. Restarting a service may temporarily reduce CPU usage, but understanding the underlying cause prevents the problem from returning.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 5: Investigate Web and Database Workloads<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For EC2 instances hosting websites, high CPU can originate from web requests or application workers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check the web server logs for unusual traffic patterns, repeated requests, or potentially abusive clients. Depending on the environment, inspect Apache, Nginx, PHP-FPM, or application-specific logs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Databases are another common source of CPU consumption. Long-running queries, missing indexes, inefficient joins, and unexpectedly large workloads can cause database processes to consume significant CPU.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a database process is responsible for the spike, examine active queries and application behavior before restarting the database service.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 6: Check CPU Credits on Burstable Instances<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AWS burstable instance families, such as T-series instances, use CPU credits to provide additional processing capacity above the baseline performance level.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If an instance continuously consumes CPU, its CPU credit balance can decline. Once credits are depleted, performance may be constrained depending on the instance&#8217;s configuration and mode.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In CloudWatch, review metrics related to CPU credit usage and balance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the workload consistently requires high CPU, a burstable instance may not be the appropriate choice. Consider an instance type designed for sustained compute workloads.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 7: Look for Unexpected or Suspicious Processes<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A sudden and unexplained CPU spike should also prompt a basic security review.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check for unfamiliar processes:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ps aux<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Review recently created files, unusual scheduled tasks, startup services, and unexpected network connections.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Also examine authentication logs for suspicious login activity. If you find an unfamiliar executable consuming large amounts of CPU, do not immediately delete it. First, determine its origin and whether it belongs to a legitimate application or package.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If compromise is suspected, isolate the system and follow your organization&#8217;s incident-response procedure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 8: Review Scheduled Jobs<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Scheduled tasks are a frequent cause of recurring CPU spikes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Review cron jobs with:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">crontab -l<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For system-wide jobs, inspect locations such as:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/etc\/cron.d\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/etc\/cron.daily\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/etc\/cron.hourly\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Look for backups, reports, scans, synchronization tasks, and maintenance scripts that run at the same time each day.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a scheduled task causes a predictable CPU spike, rescheduling it to an off-peak period may reduce its impact.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 9: Optimize or Scale the Instance<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If the application legitimately requires more CPU, repeatedly killing processes is not a long-term solution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consider:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optimizing inefficient application code<\/li>\n\n\n\n<li>Improving database queries and indexes<\/li>\n\n\n\n<li>Reducing unnecessary background jobs<\/li>\n\n\n\n<li>Distributing workloads across multiple instances<\/li>\n\n\n\n<li>Selecting an instance with more vCPUs<\/li>\n\n\n\n<li>Using Auto Scaling for variable workloads<\/li>\n\n\n\n<li>Moving compute-intensive workloads to appropriate instance families<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Monitor performance after making changes to verify that the solution addresses the underlying problem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Preventing Future CPU Problems<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Continuous monitoring is essential for maintaining EC2 performance. Configure CloudWatch alarms for sustained high CPU utilization instead of waiting until the server becomes unresponsive.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Track CPU alongside memory, disk, network, application, and database metrics. Establish a normal performance baseline so unusual behavior can be detected quickly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is also useful to review instance sizing periodically. An instance that was sufficient several months ago may become undersized as traffic and application workloads grow.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An <a href=\"https:\/\/www.supportpro.com\/blog\/common-aws-security-group-mistakes-that-block-traffic\/\">AWS<\/a> EC2 instance reaching 100% CPU is a symptom, not necessarily the root cause. The correct response depends on what is driving the processor usage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Start by identifying when the spike occurs through CloudWatch, then determine which process is consuming CPU on the server. From there, investigate application workloads, databases, scheduled jobs, CPU credits, and potential security issues.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For temporary workloads, high CPU may be completely normal. For persistent utilization, optimization, workload distribution, or instance scaling may provide a more sustainable solution.<\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile is-vertically-aligned-center has-white-background-color has-background\"><div class=\"wp-block-media-text__content\">\n<p class=\"has-large-font-size wp-block-paragraph\">Facing issues? <\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">Our technical support<br>engineers can solve it. <\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-3350a795-db50-482f-9911-301930d1b1be\"><span class=\"hs-cta-node hs-cta-3350a795-db50-482f-9911-301930d1b1be\" id=\"hs-cta-3350a795-db50-482f-9911-301930d1b1be\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/2725694\/3350a795-db50-482f-9911-301930d1b1be\" ><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-3350a795-db50-482f-9911-301930d1b1be\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/2725694\/3350a795-db50-482f-9911-301930d1b1be.png\"  alt=\"Contact Us today!\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(2725694, '3350a795-db50-482f-9911-301930d1b1be', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"904\" height=\"931\" src=\"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2022\/09\/Free-server-checkup.png\" alt=\"guy server checkup\" class=\"wp-image-12943 size-full\" srcset=\"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2022\/09\/Free-server-checkup.png 904w, https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2022\/09\/Free-server-checkup-291x300.png 291w, https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2022\/09\/Free-server-checkup-768x791.png 768w, https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2022\/09\/Free-server-checkup-585x602.png 585w\" sizes=\"(max-width: 904px) 100vw, 904px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>An AWS EC2 instance running at 100% CPU usage can quickly become a serious performance problem. Websites may respond slowly, applications can become unresponsive, SSH sessions may lag, and background&hellip;<\/p>\n","protected":false},"author":39,"featured_media":18096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[69],"tags":[],"class_list":["post-18095","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aws"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.\" \/>\n\t<meta name=\"robots\" content=\"max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n\t<meta name=\"author\" content=\"Anjali Sindhu\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO Pro (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Server Management Tips | SupportPRO Blog\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"AWS EC2 CPU at 100%: Troubleshooting Guide\" \/>\n\t\t<meta property=\"og:description\" content=\"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png\" \/>\n\t\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t\t<meta property=\"og:image:height\" content=\"960\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2026-09-29T08:08:19+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-09-29T08:09:07+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"AWS EC2 CPU at 100%: Troubleshooting Guide\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#article\",\"name\":\"AWS EC2 CPU at 100%: Troubleshooting Guide\",\"headline\":\"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide\",\"author\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/author\\\/anjali-sindhuarmiasystems-com\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/#organization\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png\",\"width\":1920,\"height\":960,\"caption\":\"AWS EC2 CPU at 100%\"},\"datePublished\":\"2026-09-29T02:08:19-06:00\",\"dateModified\":\"2026-09-29T02:09:07-06:00\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#webpage\"},\"articleSection\":\"AWS\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.supportpro.com\\\/blog\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/category\\\/aws\\\/#listItem\",\"name\":\"AWS\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/category\\\/aws\\\/#listItem\",\"position\":2,\"name\":\"AWS\",\"item\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/category\\\/aws\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#listItem\",\"name\":\"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#listItem\",\"position\":3,\"name\":\"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/category\\\/aws\\\/#listItem\",\"name\":\"AWS\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/#organization\",\"name\":\"SupportPRO\",\"description\":\"SupportPRO Blog\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/\",\"telephone\":\"+18476076123\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/author\\\/anjali-sindhuarmiasystems-com\\\/#author\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/author\\\/anjali-sindhuarmiasystems-com\\\/\",\"name\":\"Anjali Sindhu\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/da6cc3f3b96370c2f86036087fb370994fcc9b1de6e808fa3cd8a0f62dd351e3?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"Anjali Sindhu\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#webpage\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/\",\"name\":\"AWS EC2 CPU at 100%: Troubleshooting Guide\",\"description\":\"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/author\\\/anjali-sindhuarmiasystems-com\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/author\\\/anjali-sindhuarmiasystems-com\\\/#author\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#mainImage\",\"width\":1920,\"height\":960,\"caption\":\"AWS EC2 CPU at 100%\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\\\/#mainImage\"},\"datePublished\":\"2026-09-29T02:08:19-06:00\",\"dateModified\":\"2026-09-29T02:09:07-06:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/\",\"name\":\"Server Management Tips\",\"description\":\"SupportPRO Blog\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.supportpro.com\\\/blog\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO Pro -->\r\n\t\t<title>AWS EC2 CPU at 100%: Troubleshooting Guide<\/title>\n\n","aioseo_head_json":{"title":"AWS EC2 CPU at 100%: Troubleshooting Guide","description":"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.","canonical_url":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/","robots":"max-snippet:-1, max-image-preview:large, max-video-preview:-1","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#article","name":"AWS EC2 CPU at 100%: Troubleshooting Guide","headline":"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide","author":{"@id":"https:\/\/www.supportpro.com\/blog\/author\/anjali-sindhuarmiasystems-com\/#author"},"publisher":{"@id":"https:\/\/www.supportpro.com\/blog\/#organization"},"image":{"@type":"ImageObject","url":"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png","width":1920,"height":960,"caption":"AWS EC2 CPU at 100%"},"datePublished":"2026-09-29T02:08:19-06:00","dateModified":"2026-09-29T02:09:07-06:00","inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#webpage"},"isPartOf":{"@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#webpage"},"articleSection":"AWS"},{"@type":"BreadcrumbList","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog#listItem","position":1,"name":"Home","item":"https:\/\/www.supportpro.com\/blog","nextItem":{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog\/category\/aws\/#listItem","name":"AWS"}},{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog\/category\/aws\/#listItem","position":2,"name":"AWS","item":"https:\/\/www.supportpro.com\/blog\/category\/aws\/","nextItem":{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#listItem","name":"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide"},"previousItem":{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#listItem","position":3,"name":"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide","previousItem":{"@type":"ListItem","@id":"https:\/\/www.supportpro.com\/blog\/category\/aws\/#listItem","name":"AWS"}}]},{"@type":"Organization","@id":"https:\/\/www.supportpro.com\/blog\/#organization","name":"SupportPRO","description":"SupportPRO Blog","url":"https:\/\/www.supportpro.com\/blog\/","telephone":"+18476076123"},{"@type":"Person","@id":"https:\/\/www.supportpro.com\/blog\/author\/anjali-sindhuarmiasystems-com\/#author","url":"https:\/\/www.supportpro.com\/blog\/author\/anjali-sindhuarmiasystems-com\/","name":"Anjali Sindhu","image":{"@type":"ImageObject","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/da6cc3f3b96370c2f86036087fb370994fcc9b1de6e808fa3cd8a0f62dd351e3?s=96&d=mm&r=g","width":96,"height":96,"caption":"Anjali Sindhu"}},{"@type":"WebPage","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#webpage","url":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/","name":"AWS EC2 CPU at 100%: Troubleshooting Guide","description":"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/www.supportpro.com\/blog\/#website"},"breadcrumb":{"@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#breadcrumblist"},"author":{"@id":"https:\/\/www.supportpro.com\/blog\/author\/anjali-sindhuarmiasystems-com\/#author"},"creator":{"@id":"https:\/\/www.supportpro.com\/blog\/author\/anjali-sindhuarmiasystems-com\/#author"},"image":{"@type":"ImageObject","url":"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png","@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#mainImage","width":1920,"height":960,"caption":"AWS EC2 CPU at 100%"},"primaryImageOfPage":{"@id":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/#mainImage"},"datePublished":"2026-09-29T02:08:19-06:00","dateModified":"2026-09-29T02:09:07-06:00"},{"@type":"WebSite","@id":"https:\/\/www.supportpro.com\/blog\/#website","url":"https:\/\/www.supportpro.com\/blog\/","name":"Server Management Tips","description":"SupportPRO Blog","inLanguage":"en-US","publisher":{"@id":"https:\/\/www.supportpro.com\/blog\/#organization"}}]},"og:locale":"en_US","og:site_name":"Server Management Tips | SupportPRO Blog","og:type":"article","og:title":"AWS EC2 CPU at 100%: Troubleshooting Guide","og:description":"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.","og:url":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/","og:image":"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png","og:image:secure_url":"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png","og:image:width":1920,"og:image:height":960,"article:published_time":"2026-09-29T08:08:19+00:00","article:modified_time":"2026-09-29T08:09:07+00:00","twitter:card":"summary","twitter:title":"AWS EC2 CPU at 100%: Troubleshooting Guide","twitter:description":"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.","twitter:image":"https:\/\/www.supportpro.com\/blog\/wp-content\/uploads\/2026\/09\/AWS-EC2-CPU-at-100-A-Complete-Troubleshooting-Guide.png"},"aioseo_meta_data":{"post_id":"18095","title":"AWS EC2 CPU at 100%: Troubleshooting Guide","description":"Learn how to troubleshoot 100% CPU usage on AWS EC2, identify high-CPU processes, check CloudWatch, investigate causes, and optimize server performance.","keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"Article","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"seo_analyzer_scan_date":"2026-09-29 08:10:49","breadcrumb_settings":null,"limit_modified_date":false,"open_ai":null,"ai":{"faqs":[],"keyPoints":[],"schemas":[],"titles":[],"descriptions":[],"socialPosts":{"email":{"subject":"","preview":"","content":""},"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2026-09-29 08:00:12","updated":"2026-09-29 08:10:49","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.supportpro.com\/blog\" title=\"Home\">Home<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.supportpro.com\/blog\/category\/aws\/\" title=\"AWS\">AWS<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\tAWS EC2 CPU at 100%: A Complete Troubleshooting Guide\n<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.supportpro.com\/blog"},{"label":"AWS","link":"https:\/\/www.supportpro.com\/blog\/category\/aws\/"},{"label":"AWS EC2 CPU at 100%: A Complete Troubleshooting Guide","link":"https:\/\/www.supportpro.com\/blog\/aws-ec2-cpu-at-100-a-complete-troubleshooting-guide\/"}],"_links":{"self":[{"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/posts\/18095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/comments?post=18095"}],"version-history":[{"count":1,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/posts\/18095\/revisions"}],"predecessor-version":[{"id":18097,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/posts\/18095\/revisions\/18097"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/media\/18096"}],"wp:attachment":[{"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/media?parent=18095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/categories?post=18095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.supportpro.com\/blog\/wp-json\/wp\/v2\/tags?post=18095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}