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Issue metadata

Status: Duplicate
Merged: issue 701829
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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25.6% regression in page_cycler_v2.intl_ar_fa_he at 456334:456379

Project Member Reported by nzolghadr@chromium.org, Mar 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=701902

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtOWvpgsM


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

linux-release
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 15 2017

Mergedinto: 701829
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : nednguyen
  Commit : 267012ae7453eddde6de2c604e8aa7efed10d67a
  Date   : Mon Mar 13 12:36:50 2017
  Subject: Roll ts_proxy to the latest commit (a2f578febcd79b751d948f615bbde8f6189fbeed)

Bisect Details
  Configuration: linux_perf_bisect
  Benchmark    : page_cycler_v2.intl_ar_fa_he
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-warm/http___www.startimes.com_f.aspx
  Change       : 16.46% | 158.965111109 -> 190.987222224

Revision                                 Result                  N
chromium@456333                          158.965 +- 20.2421      9       good
chromium@456356                          161.64 +- 38.3352       9       good
chromium@456362                          157.374 +- 17.3436      9       good
chromium@456363                          161.323 +- 32.0224      14      good
chromium@456363,catapult@267012ae74      187.495 +- 39.8053      6       bad       <--
chromium@456364                          183.046 +- 48.459       9       bad
chromium@456365                          185.386 +- 40.7062      9       bad
chromium@456368                          188.559 +- 60.7213      14      bad
chromium@456379                          190.987 +- 33.2766      9       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=http...www.startimes.com.f.aspx page_cycler_v2.intl_ar_fa_he

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985030973754990144

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6138734187118592


| 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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