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Re: [jakartaee-tck-dev] Being green and reducing our Jenkins CI usage...
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On 7/7/20 2:05 PM, Scott Marlow wrote:
Hi,
I heard some general feedback that we are consuming more resources than
expected with our jakartaee-tck environment. I don't have specifics at
the moment but am thinking that we could update
the jakartaeetck-nightly-build-master [1] job to only run if a change
was merged to the TCK repo [2]. Any volunteers from the committers to
work on this change? Only the committers have permissions to update the
Jenkins job [1] to poll the SCM (git).
Ideas are welcome :)
The jakartaeetck-nightly-build-master [1] currently runs every night,
regardless of whether there are any changes made to the Platform TCK
repo. We could update jakartaeetck-nightly-build-master [1] to
reference the jakartaee-tck git repo [2], however that adds the
additional cost of cloning the git repo (such that building the Platform
TCK takes even more time versus some time savings on days when there are
no TCK code changes).
I'm leaning towards trying to add the git repo [2] to the
jakartaeetck-nightly-build-master [1] job, so that we reduce the overall
time consumed.
Scott
I also have been thinking about further changes to the JNLP memory
settings in [3]. More specifically, we could try reducing the -Xmx2048m
setting to a lower value that is still higher than the -Xmx512m that we
previously used, it is guesswork mostly. If we switched to -Xmx1024m,
we likely will use more cpu (e.g. running more frequent GCs) but that
might free up other VM/OS level memory for kernel use. We would need to
measure the before/after result of such a change. If the TCK runs are
faster with this change, we would it keep it. If the TCK runs are
slower or have more test failures, we would revert it.
Scott
[1]
https://ci.eclipse.org/jakartaee-tck/job/jakartaeetck-nightly-build-master/
[2] https://github.com/eclipse-ee4j/jakartaee-tck
[3]
https://github.com/eclipse-ee4j/jakartaee-tck/blob/master/Jenkinsfile#L130
