|
Server : Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8e-fips-rhel5 DAV/2 PHP/5.2.17 System : Linux localhost 2.6.18-419.el5 #1 SMP Fri Feb 24 22:47:42 UTC 2017 x86_64 User : nobody ( 99) PHP Version : 5.2.17 Disable Function : NONE Directory : /usr/share/doc/systemtap-client-1.8/examples/profiling/ |
Upload File : |
title: Show Reasons and Durations for Processes Sleeping name: latencytap.stp version: 1.0 author: William Cohen keywords: profiling subsystem: any status: experimental exit: user-controlled output: sorted-list scope: system-wide description: The latencytap.stp script collects data on the intervals processes are deactivated (sleeping). The script categorizes the reasons for the sleeps by analyzing the backtraces and displays a sorted list of the top 20 causes from largest total sum time sleeping to smallest. The output is updated every 30 seconds. The script needs to be compiled with the '--all-modules' option to produce reasons for sleeps caused by modules. Optionally, this script can be used with the '-c' or '-x' options to focus on a specific PID. test_check: stap -p4 --all-modules latencytap.stp test_installcheck: stap latencytap.stp --all-modules -c "sleep 0.2"