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Add a voting YSlow job to Jenkins
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YSlow is Yahoo!'s page performance tool. It runs under PhantomJS (see for easy integration with Jenkins.

There should be a Jenkins job to run YSlow against a page and to -1 the change if the overall score drops relative to an established baseline.

Version: wmf-deployment
Severity: enhancement



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bzimport raised the priority of this task from to Medium.Nov 22 2014, 2:16 AM
bzimport set Reference to bz57137.
bzimport added a subscriber: Unknown Object (MLST).

+1. This should make front-end performance regressions visible before they become an issue in production.

Not sure how we can get a job running reliably / offering same performances. Maybe a dedicated slave that would run only one job at a time.

hashar lowered the priority of this task from Medium to Lowest.Nov 24 2014, 10:34 AM
Krinkle claimed this task.

@ori has been working on various benchmark tools. If he or other teams have a specific need and proposal for jobs that should run after each commit of some git repository (or from a timed-schedular in Jenkins), a task can be filed for that.

However this task seems too vague and is not actionable from Continuous-Integration-Infrastructure perspective. I'd recommend interested parties to come up with a proposal for the environment (e.g. MediaWiki core + skin + certain extensions), and implement the actual build script (e.g. run headless Chromium with YSlow, or some other plugin). We then need to find a way to store past build information by target branch (or limit to master) and have the job run on unmerged patches to compare against.