https://bugzilla.wikimedia.org/show_bug.cgi?id=47724
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Bug ID: 47724
Summary: mw/core gating jobs are delayed during peak hours
Product: Wikimedia
Version: wmf-deployment
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Continuous integration
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
Mobile Platform: ---
On Thursday April 25th, the mw/core.git Jenkins jobs have been slow to report
back in Gerrit. Example change: https://gerrit.wikimedia.org/r/#/c/60765/ which
took a good 20 minutes for gate-and-submit to report back.
I suspect there were over jobs running at that time such as the parser tests
which takes a good 5 minutes to run. So if you have lot of changes submitted
(like X of them ), the most recent change would be run (X+1) * 5 minutes after
submission.
This is due to the mediawiki-core-phpunit-parser job being shared among all
pipelines. The patchsets sent (test pipeline) and the one asked to be merged
(gate-and-submit pipeline) ends up racing for an execution slot in Jenkins.
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