User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36 Steps to reproduce: Talos has detected a Firefox performance regression from your commit 01fb7f94f61d in bug 1085223. We need you to address this regression. This is a list of all known regressions and improvements related to your bug: http://alertmanager.allizom.org:8080/alerts.html?rev=01fb7f94f61d&showAll=1 On the page above you can see Talos 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, please see: https://wiki.mozilla.org/Buildbot/Talos/Tests#tscroll.2C_tscrollx 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,win32,macosx64 -u none -t svgr # add "mozharness: --spsProfile" to generate profile data To run the test locally and do a more in-depth investigation, first set up a local Talos environment: https://wiki.mozilla.org/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 tscrollx Making a decision: As the patch author we need your feedback to help us handle this regression. *** Please let us know your plans by Saturday, or the offending patch will be backed out! *** Some options to consider: 1) If you are planning to investigate and fix this regression, let us know a time frame. You can also just back out this patch now and do the investigation later. 2) If it seems impossible that this regression is caused by your patch, let us know ASAP. 3) If this regression is expected, and we should accept this regression, please explain why and we will close the bug. 4) If the scope and scale of the regression does not justify the time & effort required for an investigation, let us know and we can close the bug.

I'll issue a backout either today or tomorrow.

I know the trees have been closed a lot, this regression is still in the tree.

I was waiting on a review for bug 1113435. I'll cleaning this up today.

thanks BenWa!

these regressions are all fixed!