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Issue 679392 link

Starred by 1 user
Status: Assigned
Owner:
pdr@chromium.org
Cc:
wangxianzhu@chromium.org
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug



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Slimming paint invalidation regression on https://www.w3.org/TR/html5/single-page.html

Project Member Reported by pdr@chromium.org, Jan 9 2017 
Slimming paint invalidation (--enable-slimming-paint-invalidation) is a significant regression on https://www.w3.org/TR/html5/single-page.html. On my mac, the last paint invalidation is ~130ms normally, and ~180ms with spinvalidation.

Comment 1 by schenney@chromium.org, Apr 27 2017

Cc: wangxianzhu@chromium.org
Labels: PaintTeamTriaged-20170427 BugSource-Team M-60
Owner: pdr@chromium.org
Status: Assigned (was: Available)
pdr@, wangxianzhu@, could you see if this has been fixed with the various optimizations. Does this bug offer any content beyond our existing perf-regression related bugs?

Comment 2 by wangxianzhu@chromium.org, Apr 27 2017 

PerformanceTests/Paint/complex-content-slow-scroll.html seems the closest case. Just ran it locally. Spinvalidation is still slower (208ms vs 172ms). It may worth some profiling.

Comment 3 by schenney@chromium.org, Apr 28 2017 

Do you think we should leave it as P1?

Comment 4 by schenney@chromium.org, May 1 2017 

And leaving P1 implies a ReleaseBlock according to our SLA rule for 30 day fix of P1.

Comment 5 by pdr@chromium.org, May 5 2017

Labels: -Pri-1 Pri-2
I do think this needs to be looked at, but not P1.
spinvalidation_vs_nospinvalidation.png
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