Re: Any where from the Run object to find out how much CPU the job is consuming?
On Tue, Mar 30, 2021 at 1:21 PM Michael Carter wrote: > > Which of course causes a lot of CPU usage on the master due to the frequent > lookups to the identical username/password. I suppose you have already concluded that the high CPU usage is caused by the abovementioned credential lookups. But in case you (or anyone else) are still investigating other possible causes of high CPU usage, I have had great success with generating flame graphs from Jenkins controller Java processes using https://github.com/jvm-profiling-tools/async-profiler. It's pretty fascinating to look at the flame graph for a minute or so of execution of even a healthy Jenkins controller: you get a sense of what your workload typically looks like and therefore develop a baseline against which to analyze pathological performance later on. It's even more fascinating to look at the flame graph for Jenkins initialization, especially on a busy controller. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-dev/CAFwNDjqdKGBMbPoEugZaU6fq4txqDqJa4MZSdcv2oSdkx6%2Bx8Q%40mail.gmail.com.
Re: Any where from the Run object to find out how much CPU the job is consuming?
This is not really possible. There is https://github.com/jenkinsci/workflow-cps-plugin/blob/f522e783e917bc0aa0513a29684285b710163905/src/main/java/org/jenkinsci/plugins/workflow/cps/CpsFlowExecution.java#L357-L387 (which is *not* an API you may use from another plugin) but the `run` timing measures only CPS VM thread usage, not aggregate time used by steps invoked *from* that thread, and certainly not memory usage however one might define that (a complex topic). You might have better success detecting and warning about dumb idioms. Not necessarily with a plugin. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-dev/CANfRfr1JOgdn_rz8OsCMVXqTLf2kxOjQ%3DoGxyXvBCat3txSRUQ%40mail.gmail.com.
Re: Any where from the Run object to find out how much CPU the job is consuming?
Guess I should have added more context.
I have users adding this type of code to their pipeline scripts.
loop {
retry(10) {
withCredetials {
... some code. that takes about 10ms. or less
}
}
}
Which of course causes a lot of CPU usage on the master due to the frequent
lookups to the identical username/password.What I'm looking is there a
way from inside Jenkins https://javadoc.jenkins-ci.org/hudson/model/Run.html to
get at how much CPU/Memory the Pipeline Job is used during it's run?
I want to write a Jenkins Plugin (Like an Action Badge or something) to
report on it to screen and save to an external audit DB. But I first must
get the resource usage from inside Jenkins somehow.
Hence the question can I get to it somehow from
https://javadoc.jenkins-ci.org/hudson/model/Run.html or do I have to hook
into the onStarted/onCompleted triggers with some sort of monitor?
On Tuesday, March 30, 2021 at 3:38:03 PM UTC-4 Jesse wrote:
> Run `jstack`? Not sure what this plugin is or how it relates to diagnosing
> high CPU usage.
>
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Re: Any where from the Run object to find out how much CPU the job is consuming?
Run `jstack`? Not sure what this plugin is or how it relates to diagnosing high CPU usage. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-dev/CANfRfr2jOwOCn9iMA0oO34jT%2BHZcehJWMD_41y%3D%2BGCpx24y09w%40mail.gmail.com.
Any where from the Run object to find out how much CPU the job is consuming?
Basically the use case.
We've got a few jobs doing:
loop {
retry(10) {
withCredetials {
... some code. that takes about 10ms. or less
}
}
}
It's eating up 100% CPU on the master. I suspect we have other(s)/cases
of people doing things like this and I'm trying to add a way to detect the
high CPU usage via my plugin.
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