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Issue 713721 link

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Issue metadata

Status: Duplicate
Merged: issue 711044
Owner: ----
Closed: Apr 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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12% improvement in v8.runtimestats.browsing_desktop_classic at 463546:463938

Project Member Reported by samans@chromium.org, Apr 20 2017

Issue description

See the link to graphs below.
 

Comment 1 by samans@chromium.org, Apr 20 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=713721

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDggtXR-goM


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

chromium-rel-mac12
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Apr 20 2017

Mergedinto: 711044
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : delphick
  Commit : d8ade60fbe0ea954ecd5f186c36e6d0ac045c28c
  Date   : Tue Apr 11 09:56:28 2017
  Subject: No longer clamp setTimeout(..., 0) to 1ms.

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : IC:duration_avg/browse_news/browse_news_flipboard
  Change       : 12.60% | 280.128 -> 244.818666667

Revision             Result                  N
chromium@463545      280.128 +- 28.7416      6      good
chromium@463570      282.254 +- 37.9132      6      good
chromium@463583      277.235 +- 19.9926      6      good
chromium@463589      280.393 +- 33.761       6      good
chromium@463590      290.113 +- 51.9575      6      good
chromium@463591      247.462 +- 5.63155      6      bad       <--
chromium@463592      251.917 +- 12.5341      6      bad
chromium@463595      246.6 +- 13.2339        6      bad
chromium@463644      246.476 +- 12.4686      6      bad
chromium@463742      249.8 +- 14.8931        6      bad
chromium@463938      244.819 +- 10.4997      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.news.flipboard v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8981786604328441088

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5794526477680640


| 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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