[webkit-dev] EWS doesn't lie!

youenn fablet youennf at gmail.com
Mon Feb 10 00:51:35 PST 2014

Is it by design that only mac bots run regression tests? Technical issue?
Lack of resources?

2014-01-30 9:05 GMT+01:00 Alexey Proskuryakov <ap at webkit.org>:

> Hi WebKit hackers,
> It sometimes happens that people land patches despite EWS detecting layout
> test regressions, especially when these seem too unlikely to believe.
> In my experience, EWS has been very stable recently, and if tester bubbles
> are red, it almost certainly means that the patch is faulty. Even if they
> don't turn red, but remain yellow for a long time, there is a good chance
> that the patch introduces flaky failures, so EWS can't make up its mind
> about exactly which tests regressed.
> If you click on a yellow bubble, that takes you to a page with additional
> details, where you can see which tests are failing. I'd like to look into
> improving how this information is presented at some point in the future,
> yet even now, it shouldn't be too time consuming to check what's going on.
> For reference, we currently have mac and mac-wk2 EWS bots running
> regression tests in release mode. Other bots only verify that the patch
> builds, and don't run tests. No bots use debug mode as far as I know, so
> debug-only build failures and assertions will not be detected. Please run
> tests locally to catch as many of those as possible.
> - WBR, Alexey Proskuryakov
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> webkit-dev at lists.webkit.org
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