Talos has detected a Firefox performance regression from push d42b25947fc2. As author of one of the patches included in that push, we need your help to address this regression. This is a list of all known regressions and improvements related to the push: https://treeherder.mozilla.org/perf.html#/alerts?id=967 On the page above you can see an alert for each affected platform as well as a link to a graph showing the history of scores for this test. There is also a link to a treeherder page showing the Talos jobs in a pushlog format. To learn more about the regressing test(s), please see: https://wiki.mozilla.org/Buildbot/Talos/Tests#DAMP Reproducing and debugging the regression: If you would like to re-run this Talos test on a potential fix, use try with the following syntax: try: -b o -p win64,linux64 -u none -t g2-e10s[Windows 8],g2[Windows 8] --rebuild 5 # add "mozharness: --spsProfile" to generate profile data (we suggest --rebuild 5 to be more confident in the results) To run the test locally and do a more in-depth investigation, first set up a local Talos environment: https://wiki.mozilla.lorg/Buildbot/Talos/Running#Running_locally_-_Source_Code Then run the following command from the directory where you set up Talos: talos --develop -e [path]/firefox -a damp (add --e10s to run tests in e10s mode) Making a decision: As the patch author we need your feedback to help us handle this regression. *** Please let us know your plans by Wednesday, or the offending patch(es) will be backed out! *** Our wiki page outlines the common responses and expectations: https://wiki.mozilla.org/Buildbot/Talos/RegressionBugsHandling
this bug is sort of hard to figure out, but retriggers didn't help me find the root cause, so I just looked at commits in the small range to come up with bug 1244054. The graphs show a regression, yet with retriggers it isn't clear. Linux is the clearest case of the bunch. :Honza, can you take a look at this and help determine if this is the root cause. If you would like me to try a backout on try to see if that helps, I can do that. Possibly this is something we need to accept or there is a small fix or two we can do to reduce this.
Component: Untriaged → Developer Tools
Priority: -- → P1
Whiteboard: [talos_regression] → [talos_regression][btpp-fix-now]
(sorry, pressed enter too soon) @Brian: is this related to bug 1267323 or it needs more analyses? Can you look at it? Honza
This push doesn't look like it would cause any regressions: https://hg.mozilla.org/integration/fx-team/rev/d42b25947fc2. I'm guessing this is intertwined with Bug 1267323
I believe this regression is on beta now, not sure if there is much we can do.
(In reply to Joel Maher (:jmaher) from comment #6) > I believe this regression is on beta now, not sure if there is much we can > do. Yeah, I'm fine with closing it out
Status: NEW → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → WONTFIX
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