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Issue 638024 link

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Issue metadata

Status: WontFix
Owner:
Closed: Sep 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.8% regression in blink_perf.svg at 411825:411873

Project Member Reported by benjhayden@chromium.org, Aug 15 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=638024

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgjunotwsM


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

android-galaxy-s5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 16 2016

Cc: chrishtr@chromium.org
Owner: chrishtr@chromium.org

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

Hi chrishtr@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


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


===== SUSPECTED CL(s) =====
Subject : Pass MapCoordinatesFlags through SVGLayoutSupport::mapLocalToAncestor
Author  : chrishtr
Commit description:
  
BUG= 597745 

Review-Url: https://codereview.chromium.org/2241833002
Cr-Commit-Position: refs/heads/master@{#411838}
Commit  : 24787f3652aacb653940d81650fce15f70188494
Date    : Sat Aug 13 00:59:09 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@411824  419.723  4.907    5  good
chromium@411837  434.723  9.43219  5  good
chromium@411838  484.747  8.64334  5  bad    <--
chromium@411839  457.362  4.36415  5  bad
chromium@411840  466.92   13.692   5  bad
chromium@411843  473.196  7.75377  5  bad
chromium@411849  470.715  12.7218  5  bad
chromium@411873  473.36   9.10339  5  bad

Bisect job ran on: android_s5_perf_bisect
Bug ID: 638024

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests blink_perf.svg
Test Metric: Cowboy_transform/Cowboy_transform
Relative Change: 12.78%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_s5_perf_bisect/builds/913
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004219048306310896


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5899730853298176

| 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: WontFix (was: Assigned)

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