See for example: <https://arewefastyet.com/#machine=35&view=single&suite=speedometer-misc&subtest=Angular2-TypeScript-TodoMVC-CompletingAllItems-sync> This can be seen across the board. The regression ranges from AWFY are inconclusive, as each graph shows a different one...
For bisection purposes, this link can be used: https://mozilla.github.io/arewefastyet-speedometer/2.0/InteractiveRunner.html?suite=Angular2-TypeScript-TodoMVC
INFO: Last good revision: 7d7e8ffee1356b9270b9dbee860a952df4a61ec9 INFO: First bad revision: 71d4452dd938d6522e13e7c97bd0298d04852d77 INFO: Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=7d7e8ffee1356b9270b9dbee860a952df4a61ec9&tochange=71d4452dd938d6522e13e7c97bd0298d04852d77
Backed out bug 1341569 at smaug's request. Not sure how long it will take AWFY to pick up the change, but I pushed the backout to inbound so it'd get picked up as soon as possible.
AWFY confirms this is fixed post-backout.
Created attachment 8903442 [details] AWFY screenshot on the reference hw, x64 Thanks, the backout seems to have been effective! For example, https://arewefastyet.com/#machine=36&view=single&suite=speedometer-misc&subtest=Angular2-TypeScript-TodoMVC-CompletingAllItems-sync went back to normal.
Thanks for investigating this everyone!