Canmove, confirm, emeritus
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→xperf: Add some notes about current xperf issues.
* Did you change the dimensions of the content area? Even a little? The tsvgx test seems to be sensitive to changes like this. See {{bug|1375479}}, for example. Usually, these sorts of "regressions" aren't real regressions - they just mean that we need to re-baseline our expectations from the test.
== xperf (tp5n) ==
* contact: :aklotz
* source: [https://dxr.mozilla.org/mozilla-central/source/testing/talos/talos/xtalos xperf instrumentation]
The values we collect during stackwalk are:
* [https://dxr.mozilla.org/mozilla-central/source/testing/talos/talos/xperf.config#l11 'FileRead', 'FileWrite', 'FileFlush']
Notes:
* Currently some runs may [https://bugzilla.mozilla.org/show_bug.cgi?id=1614805 return all-zeros and skew the results]
* Additionally, these runs don't have dedicated hardware and have a large variability. At least 30 runs are likely to be needed to get stable statistics (xref [https://bugzilla.mozilla.org/show_bug.cgi?id=1616236 bug 1616236])
= Build metrics =
