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Issue 722314 link

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Issue metadata

Status: Duplicate
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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35.9% improvement in page_cycler_v2.top_10_mobile at 470445:470501

Project Member Reported by yhirano@chromium.org, May 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=722314

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg6tzUtAkM


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

android-nexus5
Project Member

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

Mergedinto: 721238
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.top_10_mobile
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/http___yandex.ru_touchsearch?text_science
  Change       : 39.03% | 600.697166667 -> 366.249833333

Revision             Result                  N
chromium@470444      600.697 +- 40.383       6      good
chromium@470473      592.645 +- 18.9221      6      good
chromium@470487      608.52 +- 78.4012       6      good
chromium@470489      587.817 +- 29.5129      6      good
chromium@470490      357.991 +- 129.607      6      bad       <--
chromium@470491      385.794 +- 93.8096      6      bad
chromium@470494      340.15 +- 102.351       6      bad
chromium@470501      366.25 +- 145.675       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...yandex.ru.touchsearch.text.science page_cycler_v2.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979532118114537840

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5269573177180160


| 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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