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Issue 787189 link

Starred by 1 user
Status: WontFix
Owner:
ccameron@chromium.org
Closed: Jan 2018
Cc:
█ kbr@chromium.org
█ vollick@chromium.org
zhuoyu.q...@samsung.com
ccameron@chromium.org
shend@chromium.org
benhenry@google.com
dsinclair@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression

Blocked on:
issue 783298


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3.6%-46.4% regression in performance_browser_tests at 517300:517388

Project Member Reported by benhenry@google.com, Nov 21 2017 
See the link to graphs below.
Project Member

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

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787189

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a3e4fa81558a37bf90eebdb23760dcc356f3df1597085a40c53a07d5074962b1


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

chromium-rel-mac11-air
chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Nov 21 2017 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/14804073f80000

Comment 7 by sullivan@chromium.org, Jan 19 2018 

Kicked off a few more jobs on different metrics, trying wider ranges.
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Jan 20 2018

Cc: kbr@chromium.org ccameron@chromium.org
Owner: ccameron@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14db25b8840000

Use a NSRunLoop instead of a CFRunLoop in GpuMain
By ccameron@chromium.org · Fri Nov 17 10:56:50 2017
chromium @ 1732f2b0b33337ace603d3ec12f28cd3afaecda4

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

Comment 9 by kbr@chromium.org, Jan 20 2018

Blockedon: 783298
Components: Internals>GPU>Internals
Suggest that this will be a WontFix.
Project Member

Comment 10 by 42576172...@developer.gserviceaccount.com, Jan 20 2018 

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14fd9568840000

Use a NSRunLoop instead of a CFRunLoop in GpuMain
By ccameron@chromium.org · Fri Nov 17 10:56:50 2017
chromium @ 1732f2b0b33337ace603d3ec12f28cd3afaecda4

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

Comment 11 by 42576172...@developer.gserviceaccount.com, Jan 22 2018

Cc: vollick@chromium.org zhuoyu.q...@samsung.com shend@chromium.org
📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/15d80bd8840000

Make SnapAlignment and SnapAxis to be enum class.
By zhuoyu.qian@samsung.com · Fri Nov 17 10:55:07 2017
chromium @ 024f8e19d88280b08026f465a3fa00e644ef0b3b

Use a NSRunLoop instead of a CFRunLoop in GpuMain
By ccameron@chromium.org · Fri Nov 17 10:56:50 2017
chromium @ 1732f2b0b33337ace603d3ec12f28cd3afaecda4

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

Comment 12 by ccameron@chromium.org, Jan 22 2018

Status: WontFix (was: Assigned)
Yeah, this will be WontFix -- needed for correctness.
►

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