A specific job or your Jenkins environment is experiencing high CPU.
CloudBees Jenkins Enterprise
CloudBees Jenkins Operations Center
Operating System: Linux
Request the jenkinshangWithJstack.sh script via a Support Ticket.
The jenkinshangWithJstack.sh script will need to be made executable by running:
chomd +x jenkinshangWithJstack.sh .
Your environment should be configured as documented in Prepare Jenkins For Support.
If you are experiencing a high CPU issue please collect
the following data while the issue is occurring:
Generate a new Support Bundle.
jenkinshangWithJstack.sh scriptas the same user that starts Jenkins
sudo -u jenkins sh jenkinshangWithJstack.sh PID 300 5(where PID is the PID of
the CloudBees Jenkins process).
If CloudBees Jenkins Enterprise or CloudBees Jenkins Operations Center is running on Ubuntu
you will need to confirm the PID via the command line by running
ps -ef | grep jenkins.
This is required because the CloudBees Jenkins PID File contains the PID of the daemon process itself
not the CloudBees Jenkins PID.
jenkinshangWithJstack.sh script will collect 1 full thread dump every 5 seconds
via jstack (jstack is included in the Java JDK only, not the JRE) along with top, vmstat, netstat, and iostat data.
The necessary packages should be installed in your environment for generating top, top dash H, vmstat, netstat, and
jenkinshangWithJstack.sh script will generate data in the current directory it is run from.
- Upload the Support Bundle, the
jenkinshangWithJstack.$PID.output.tar.gzfile that was generated by the
jenkinshangWithJstack.shscript, and the verbose gc log file for review.
jenkinshangWithJstack.sh script does not run as expected please upload the output the script generates from the
terminal window for review.