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Issue metadata

Status: Duplicate
Merged: issue 674883
Owner: ----
Closed: Dec 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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95.2% regression in v8.browsing_mobile at 438155:438183

Project Member Reported by mlippautz@google.com, Dec 16 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=674884

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgz6T0rQoM


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

android-nexus5X
Project Member

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

Mergedinto: 674883
Status: Duplicate (was: Untriaged)

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


===== SUSPECTED CL(s) =====
Subject : [heap] Special handling for small heaps in eager finalization of
Author  : ulan
Commit description:
  incremental marking.

BUG=chromium:671994

Review-Url: https://codereview.chromium.org/2565173004
Cr-Commit-Position: refs/heads/master@{#41666}
Commit  : ca9209d705f5757111ba079aef7ad98b880fc0f8
Date    : Tue Dec 13 10:25:53 2016


===== TESTED REVISIONS =====
Revision                       Mean     Std Dev  N  Good?
chromium@438154                22.755   14.7971  6  good
chromium@438169                25.7088  15.4082  6  good
chromium@438173                21.2742  15.3304  6  good
chromium@438173,v8@3f9c2c590d  19.8915  19.658   6  good
chromium@438173,v8@cd23d6771a  21.2628  11.1274  6  good
chromium@438173,v8@ca9209d705  37.15    3.55819  6  bad    <--
chromium@438174                38.9947  7.84646  6  bad
chromium@438175                39.9353  5.22222  6  bad
chromium@438176                38.9612  5.40091  6  bad
chromium@438183                39.827   6.71697  6  bad

Bisect job ran on: android_nexus5X_perf_bisect
Bug ID: 674884

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.social.facebook v8.browsing_mobile
Test Metric: v8-gc-incremental-finalize_sum/browse_social/browse_social_facebook
Relative Change: 75.03%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5X_perf_bisect/builds/998
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8993117028603963440


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5785315342548992

| 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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