38% regression in rendering.mobile mean_pixels_checkerboarded at 593360:593397 |
|||||||
Issue descriptionThis regressed on Nexus 5, and is also showing up as a ~20% regression in checkerboarding UMA on Android (the percentage of frames with at least 1 tile of checkerboard increased from 0.56% to 0.67% on Canary). Telemetry graph: https://chromeperf.appspot.com/report?sid=f70d80de5440db95366cd7cb2f9b4fb5c19f2277c48409b603e81bbf78f6cc3f&start_rev=572503&end_rev=574524 Going to kick off a bisect, but looking at the regression range (https://chromium.googlesource.com/chromium/src/+log/370e13d1502c1343c8cee64d67576dafca66de92%5E..5d2f2dc7550c03eef7f506a79df939d75322c145?pretty=fuller&n=1000), https://chromium-review.googlesource.com/c/chromium/src/+/1237246 seems like a possible cause.
,
Oct 2
Working link to the telemetry graph: https://chromeperf.appspot.com/report?sid=f70d80de5440db95366cd7cb2f9b4fb5c19f2277c48409b603e81bbf78f6cc3f
,
Oct 3
📍 Pinpoint job started. https://pinpoint-dot-chromeperf.appspot.com/job/153e932ce40000
,
Oct 3
📍 Pinpoint job started. https://pinpoint-dot-chromeperf.appspot.com/job/153cc3d8e40000
,
Oct 4
😿 Pinpoint job stopped with an error. https://pinpoint-dot-chromeperf.appspot.com/job/139645dce40000 All of the runs failed. The most common error (20/20 runs) was: ImportError: No module named mock
,
Oct 4
📍 Found a significant difference after 1 commit. https://pinpoint-dot-chromeperf.appspot.com/job/153cc3d8e40000 Use vpython and remove vendored pymock. by jbudorick@chromium.org https://chromium.googlesource.com/catapult/+/23c67a511280f6dbc2a2bea849dd7eed5104809e mean_pixels_checkerboarded: 0.4152 → No values Understanding performance regressions: http://g.co/ChromePerformanceRegressions Benchmark documentation link: https://bit.ly/rendering-benchmarks
,
Oct 5
Don't think that is the right owner.
,
Oct 5
😿 Pinpoint job stopped with an error. https://pinpoint-dot-chromeperf.appspot.com/job/153e932ce40000 All of the runs failed. The most common error (20/20 runs) was: ImportError: No module named mock
,
Oct 10
,
Oct 11
,
Oct 12
This sounds similar to Issue 893860 . I'll take this bug and investigate a bit.
,
Oct 12
|
|||||||
►
Sign in to add a comment |
|||||||
Comment 1 by 42576172...@developer.gserviceaccount.com
, Oct 2