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Our Jenkins server(linux machine) slows down over a period of time and it gets unresponsive. All the jobs take unexpectedly long time(even though they run on slaves which are different machines from server). One of things I have observed is increase in the number of open files. The number seems to be increasing as shown in the image below. Does anyone have a solution to keep check on this without restarting the server? Also, are there any configurations/tweaks that could improve the performance of the jenkins server?
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Fortunately, the most common reasons your Jenkins instance is slow are easy to diagnose and correct: Non-performant plugins. Poorly tuned JVM arguments. Non-optimal garbage collection.
Minimum hardware requirements: 256 MB of RAM. 1 GB of drive space (although 10 GB is a recommended minimum if running Jenkins as a Docker container)
One is to make sure you're rotating your build history or discarding your old builds. That helps reduce Jenkins' memory footprint, which improves performance. We recommend keeping 30 to 60 days of build history, but you should configure this on a per-job basis.
We are using Jenkins for four years and we tried to keep it up-to-date (Jenkins + plug-ins). Like you we experimented some inconvenience, depending on new versions of Jenkins or plug-ins... So we decided to stop this "continuous" upgrade
Here are humble tips:
jenkins_home before any upgrade!-Xms4G -Xmx4G
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In addition to above, you can also try:
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