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Issue 743864 link

Starred by 1 user
Status: Available
Owner: ----
Cc:
danakj@chromium.org
vmp...@chromium.org
vmi...@chromium.org
ericrk@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Bug



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Checkerboarding on lkml.org on Pixel XL

Project Member Reported by sunn...@chromium.org, Jul 16 2017 
Chrome Version: 61.0.3142.0 (dev) and 61.0.3157.3 (canary)
OS: Android N 7.1.2

Go to https://lkml.org/lkml/2017/7/6/577?utm_source=cronweekly.com
Zoom into the page a bit so that you can scroll vertically
Observe checkerboarding while scrolling (flashing from white to the greenish background of the page)

Traces from both dev (scheduler experiment disabled) and canary (scheduler enabled by default) attached.

One copy raster is used (vmiura@ I thought we were removing the ganesh veto in M61). Activation takes a long time in both cases, can't say if it's longer with the scheduler (because the layer tree is mutating but we aren't marking tiles ready). Commits are blocked while activation is pending due to MFBA. Raster tasks seem to be mostly running on a single thread.
trace_lkml_checkerboarding_scheduler.json.zip
261 KB Download
trace_lkml_checkerboarding_no_scheduler.json.zip
436 KB Download

Comment 1 by enne@chromium.org, Jul 21 2017

Status: Available (was: Untriaged)
Project Member

Comment 2 by sheriffbot@chromium.org, Jul 23

Labels: Hotlist-Recharge-Cold
Status: Untriaged (was: Available)
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 3 by sunn...@chromium.org, Jul 23

Status: Available (was: Untriaged)
Reproduced on Pixel 2 XL. Scrolling isn't as bad as the Pixel XL, but pinch zoom out definitely checkerboards the background color layer.
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