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Issue metadata

Status: Duplicate
Merged: issue 635801
Owner:
Last visit > 30 days ago
Closed: Aug 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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12.8% regression in thread_times.key_idle_power_cases at 410333:410343

Project Member Reported by pmeenan@chromium.org, Aug 10 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=636358

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgtoHLpwoM


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 11 2016

Mergedinto: 635801
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Reland of Separate deferred startup into tasks.
Author  : wnwen
Commit description:
  
Original: https://codereview.chromium.org/2121863002/

Fixes:
- Guarantee ChromeApplication#onStartWithNative has been called by
  custom tabs before posting deferred startup.

BUG= 614452 
TBR=dtrainor@chromium.org,agrieve@chromium.org,asvitkine@chromium.org,pasko@chromium.org

Review-Url: https://codereview.chromium.org/2207933002
Cr-Commit-Position: refs/heads/master@{#410342}
Commit  : bcdc694e5fb4cf003124cf5b940e4807322a184e
Date    : Mon Aug 08 13:53:49 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev    N   Good?
chromium@410332  4.51585  0.356538   12  good
chromium@410338  4.50731  0.1644     8   good
chromium@410341  4.54005  0.211201   12  good
chromium@410342  4.81927  0.172451   12  bad    <--
chromium@410343  4.78138  0.0912918  8   bad

Bisect job ran on: android_nexus5_perf_bisect
Bug ID: 636358

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests thread_times.key_idle_power_cases
Test Metric: tasks_per_second_total_all/blank.html
Relative Change: 7.19%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/3968
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004709951972892496


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5233985504935936

| 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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