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Issue 792081 link

Starred by 1 user
Status: WontFix
Owner:
█ nainar@chromium.org
Not on Chrome anymore
Closed: Feb 2018
Cc:
█ pmeenan@chromium.org
futhark@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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14.3%-20.3% regression in loading.desktop at 521232:521272

Project Member Reported by pmeenan@chromium.org, Dec 5 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 5 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=792081

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=85a612535ba38bb896a4710ee378319d736ee6141fe532a63435c461574d954d


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

chromium-rel-mac-retina
chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 5 2017

Cc: nainar@chromium.org futhark@chromium.org
Owner: nainar@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14cedd94040000

Remove calls to styleForLayoutObject() in LayoutTreeBuilder::style()
By nainar@chromium.org · Mon Dec 04 01:01:29 2017
chromium @ b71f5b7df345f1a8603b7cf7b59edf48288e7d96

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

Comment 4 by sullivan@chromium.org, Jan 22 2018

Owner: futhark@chromium.org
futhark: Can you take a look since nainar's status says "DO NOT USE"?

Here are some traces from the bisect that pinpointed the regression to the CL:
Before the CL: https://storage.cloud.google.com/chrome-telemetry-output/Economist_2017-12-05_08-58-36_68625.html
After the CL: https://storage.cloud.google.com/chrome-telemetry-output/Economist_2017-12-05_08-46-03_62228.html

Comment 5 by nainar@chromium.org, Jan 22 2018

Cc: -nainar@chromium.org
Owner: nainar@chromium.org
Hi, 

Sorry I was testing an OOO message and I accidentally set it. 
Working on this bug.

Comment 6 by nainar@chromium.org, Feb 2 2018

Status: WontFix (was: Assigned)
This report (and others) show the numbers being lower than the baseline when the bug was filed. Marking as WontFix.
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