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Issue 677475 link

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Issue metadata

Status: WontFix
Owner:
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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14.8% regression in blink_perf.paint at 440695:440708

Project Member Reported by alexclarke@chromium.org, Dec 29 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=677475

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgv5T4tQoM


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

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 29 2016

Cc: haraken@chromium.org
Owner: haraken@chromium.org

=== PERF REGRESSION ===


=== Auto-CCing suspected CL author haraken@chromium.org ===

Hi haraken@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : Body should use ContextClient instead of ContextLifecycleObserver
Author  : haraken
Commit description:
  
ContextClient is more lightweight than ContextLifecycleObserver.
We prefer ContextClient.

BUG=610176

Review-Url: https://codereview.chromium.org/2605603002
Cr-Commit-Position: refs/heads/master@{#440697}
Commit  : 852b53148e04122ccb0c444dff6e8e0cc3939f26
Date    : Mon Dec 26 08:32:36 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@440694  1001.91  81.5532  30  good
chromium@440696  1006.16  151.573  30  good
chromium@440697  1188.83  93.024   30  bad    <--
chromium@440698  1121.45  86.5708  30  bad
chromium@440701  1154.39  109.401  30  bad
chromium@440708  1154.01  89.7821  30  bad

Bisect job ran on: android_nexus7_perf_bisect
Bug ID: 677475

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.paint
Test Metric: large-table-background-change-with-invisible-collapsed-borders/large-table-background-change-with-invisible-collapsed-borders
Relative Change: 15.18%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus7_perf_bisect/builds/3571
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8991947236986956576


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5781927854866432

| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!
Status: Assigned (was: Untriaged)
Cc: wangxianzhu@chromium.org
After 8 months, there's likely not much we can do about this; WontFix-ing. Ccing owner of blink_perf.paing benchmark as FYI.
Status: WontFix (was: Assigned)

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