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Issue metadata

Status: Duplicate
Merged: issue 668166
Owner: ----
Closed: Nov 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.6% regression in blink_perf.bindings at 433730:433791

Project Member Reported by nzolghadr@chromium.org, Nov 23 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=668167

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg26T_swoM


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

chromium-rel-win10
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Nov 23 2016

Mergedinto: 668166
Status: Duplicate (was: Untriaged)

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


===== SUSPECTED CL(s) =====
Subject : Out-of-line WTF::String's destructor.
Author  : dcheng
Commit description:
  
This saves ~504KB in the official Linux x64 binary.

BUG=none

Review-Url: https://codereview.chromium.org/2516123002
Cr-Commit-Position: refs/heads/master@{#433737}
Commit  : 2ce3d703c50150ebe5cd6c3f1e2bf4a19f590766
Date    : Tue Nov 22 02:08:03 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@433729  782.923  25.7039  25  good
chromium@433733  778.979  7.11628  25  good
chromium@433735  779.631  23.3656  25  good
chromium@433736  781.797  43.7183  25  good
chromium@433737  583.624  13.3299  25  bad    <--
chromium@433745  649.352  226.72   25  bad
chromium@433760  538.999  54.1776  25  bad
chromium@433791  705.215  16.1578  25  bad

Bisect job ran on: winx64_10_perf_bisect
Bug ID: 668167

Test Command: src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.bindings
Test Metric: set-attribute/set-attribute
Relative Change: 9.93%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64_10_perf_bisect/builds/783
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8995189996227275984


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5861833968189440

| 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!

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