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Issue metadata

Status: Duplicate
Merged: issue 648161
Owner:
Closed: Sep 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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44.3% regression in smoothness.top_25_smooth at 419161:419209

Project Member Reported by toyoshim@chromium.org, Sep 22 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=649228

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-dzlsQoM


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

chromium-rel-mac10
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 22 2016

Mergedinto: 648161
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Plugin Power Saver Tiny: Fix Field Trial testing config
Author  : tommycli
Commit description:
  
Previously the field trial testing was incorrect. The key was the
feature name instead of the Finch experiment name.

BUG=608886

Review-Url: https://codereview.chromium.org/2342893003
Cr-Commit-Position: refs/heads/master@{#419208}
Commit  : 921187511a6fba333a6518857d697439505946d9
Date    : Fri Sep 16 17:50:59 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@419160  50.7734  4.88316  5  good
chromium@419185  53.6107  5.48438  5  good
chromium@419197  56.6951  4.20241  5  good
chromium@419203  55.0583  2.45516  5  good
chromium@419206  55.0596  1.55077  5  good
chromium@419207  52.6282  2.31079  5  good
chromium@419208  32.2294  6.99261  5  bad    <--
chromium@419209  33.3762  4.12844  5  bad

Bisect job ran on: mac_10_10_perf_bisect
Bug ID: 649228

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: percentage_smooth/http___www.youtube.com
Relative Change: 34.26%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_10_perf_bisect/builds/2393
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9000845726065669488


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5895930056802304

| 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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