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Issue metadata

Status: Duplicate
Merged: issue 735649
Owner:
Closed: Jun 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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21.7%-1410.7% regression in v8.runtimestats.browsing_desktop at 477932:481280

Project Member Reported by bmeurer@google.com, Jun 26 2017

Issue description

See the link to graphs below.
 

Comment 2 by jochen@chromium.org, Jun 27 2017

Owner: bmeu...@chromium.org
Status: Assigned (was: Untriaged)
Status: Available (was: Assigned)
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Jun 27 2017

Mergedinto: 735649
Status: Duplicate (was: Available)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : hpayer
  Commit : 0d2ed6c3287ec48ee06ec1b69287ed4bf0dd60d7
  Date   : Mon Jun 19 10:16:13 2017
  Subject: [heap] Allow a minimum semi-space size of 512K.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : GC:duration_avg/browse_social/browse_social_twitter
  Change       : 798.28% | 4.71416666667 -> 42.3463333333

Revision                           Result                  N
chromium@480804                    4.71417 +- 10.5297      6      good
chromium@480813                    6.85717 +- 19.2517      6      good
chromium@480818                    4.65283 +- 11.5855      6      good
chromium@480820                    2.35467 +- 3.19743      6      good
chromium@480821                    11.6423 +- 19.7531      6      good
chromium@480821,v8@8a32788f39      7.24717 +- 17.7775      6      good
chromium@480821,v8@f626d5df7e      5.86083 +- 14.565       6      good
chromium@480821,v8@bc717ae84b      5.02117 +- 13.695       6      good
chromium@480821,v8@0d2ed6c328      40.2527 +- 14.7463      6      bad       <--
chromium@480821,v8@d6c9e534c8      38.0173 +- 4.75466      6      bad
chromium@480821,v8@2325ef535f      42.1065 +- 11.9565      6      bad
chromium@480822                    42.3463 +- 13.693       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.social.twitter v8.runtimestats.browsing_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8975750988526105104

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5284145070080000


| 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 Speed>Bisection.  Thank you!

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