{"id":41649,"date":"2023-12-06T05:36:04","date_gmt":"2023-12-06T05:36:04","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=41649"},"modified":"2023-12-06T05:36:07","modified_gmt":"2023-12-06T05:36:07","slug":"strace-command-increase-cpu-load","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/strace-command-increase-cpu-load\/","title":{"rendered":"Strace Command: Increase CPU load"},"content":{"rendered":"\n

The <\/span>strace<\/code> command is primarily used for tracing system calls and signals made by a process. While it can generate some CPU load because of the overhead it introduces, it’s not typically used to intentionally create a “huge” CPU load. If your goal is to stress the CPU for testing or benchmarking purposes, you may want to consider other tools like stress, yes, or stress-ng.<\/span>

However, if you still want to use strace<\/code> to generate some CPU load, you can do so by tracing a process that performs a lot of system calls. For example, you can run a simple infinite loop that makes system calls continuously and then use strace<\/code> to trace that process. Here’s an example:<\/p><\/p>\n\n\n\n

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# Create a simple script called infinite_loop.sh that contains a loop making frequent system calls:<\/span>\r\n\r\n#!\/bin\/bash<\/span>\r\nwhile<\/span> true<\/span>; do<\/span>\r\n    echo<\/span> \"Hello, world!\"<\/span> >\/dev\/null<\/span>\r\ndone\r\n\r\n# Make the script executable:<\/span>\r\n\r\nchmod +x infinite_loop.sh\r\n\r\n# Run the script in the background:<\/span>\r\n\r\n.\/infinite_loop.sh &\r\n\r\n# Find the process ID (PID) of the running script:<\/span>\r\nps aux | grep infinite_loop.sh\r\n\r\n# Use strace to trace the process by specifying its PID:<\/span>\r\nstrace -p <PID><\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
\n","protected":false},"excerpt":{"rendered":"
The strace command is primarily used for tracing system calls and signals made by a process. While it can generate some CPU load because of the overhead it introduces, it’s not typically used to intentionally create a “huge” CPU load. If your goal is to stress the CPU for testing or benchmarking purposes, you may…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","_joinchat":[],"footnotes":""},"categories":[2],"tags":[],"class_list":["post-41649","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/41649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=41649"}],"version-history":[{"count":1,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/41649\/revisions"}],"predecessor-version":[{"id":41650,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/41649\/revisions\/41650"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=41649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=41649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=41649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}