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Issue 797119 link

Starred by 1 user
Status: WontFix
Owner:
█ junov@chromium.org
Last visit > 30 days ago
Closed: Apr 2018
Cc:
█ junov@chromium.org
█ briander...@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3% regression in performance_browser_tests at 524884:524950

Project Member Reported by briander...@chromium.org, Dec 21 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 21 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797119

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=555b11759107fedca159de8b394ebf55b290e8a2706f3f19fd3cb84db58edf7d


Bot(s) for this bug's original alert(s):

chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 22 2017

Cc: junov@chromium.org
Owner: junov@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/15fc8c9e040000

Fix canvas flickering and broken updates on Mac
By junov@chromium.org · Tue Dec 19 00:55:31 2017
chromium @ c1fd548f2cf9a3585e82d800cfc40167a48bb582

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Comment 4 by sullivan@chromium.org, Jan 23 2018 

junov: perf sheriff checking in. Any update on this bug?

Comment 5 by junov@chromium.org, Apr 30 2018

Status: WontFix (was: Assigned)
The Fix that caused the regression was expected to affect performance negatively in some cases because it adds extra synchronization primitives.  That synchronization is necessary to prevent flickering.
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