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Issue 825582 link

Starred by 3 users
Status: WontFix
Owner:
zmo@chromium.org
Closed: Mar 2018
Cc:
liberato@google.com
piman@chromium.org
tdres...@chromium.org
ccameron@chromium.org
sullivan@chromium.org
zmo@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3.6%-149.1% regression in system_health.common_desktop at 545378:545519

Project Member Reported by sullivan@chromium.org, Mar 25 2018 
+tdresser: we only see this on one device config, and it seems to be coming back to a level it was at before. Will wait for a bisect, but worried this might be bimodal.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Mar 25 2018 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=825582

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8035305b41d5dd31ac965da5aed51fe7e3796c1ec365aa45c2eb416ebcad56e6


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

chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 25 2018

Cc: zmo@chromium.org piman@chromium.org ccameron@chromium.org
Owner: zmo@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/1297413d440000

Enforce GPU earlier on Mac to avoid GPU switching during startup. by zmo@chromium.org
https://chromium.googlesource.com/chromium/src/+/ee6d9fdd6aa00ecc73a23d6da91425c3e776e498

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

Comment 4 by zmo@chromium.org, Mar 26 2018

Status: WontFix (was: Assigned)
Is this the Retina Mac?

Before my CL, we have a bug so Chrome ends up starting on discrete GPU (so of course it runs faster).  With my CL, Chrome correctly starts on integrated GPU. This is desired behavior and if perf regresses a bit, we'll have to live with it.

Comment 5 by sullivan@chromium.org, Mar 26 2018 

Yep, this is the retina macbook with dual GPU.

Comment 6 by zmo@chromium.org, Mar 26 2018 

Thanks for confirmation. Then there is nothing we should do here.

Comment 7 by zmo@chromium.org, Mar 26 2018

Cc: liberato@google.com
 Issue 825853  has been merged into this issue.
►

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