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Issue 722278 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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43.4% improvement in page_cycler_v2.intl_hi_ru at 470457:470497

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=722278

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqvyEugsM


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 16 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_webview_nexus6_aosp_perf_bisect
  Benchmark    : page_cycler_v2.intl_hi_ru
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-cold/http___news.google.co.in_nwshp?tab_in_hl_hi
  Change       : 40.20% | 934.723333333 -> 558.975

Revision             Result                  N
chromium@470456      934.723 +- 424.052      9      good
chromium@470477      965.343 +- 101.352      6      good
chromium@470487      983.008 +- 69.5212      6      good
chromium@470489      978.682 +- 36.0611      6      good
chromium@470490      551.41 +- 30.4925       6      bad       <--
chromium@470492      565.945 +- 45.7211      6      bad
chromium@470497      558.975 +- 61.1617      9      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=http...news.google.co.in.nwshp.tab.in.hl.hi page_cycler_v2.intl_hi_ru

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979537319175536176

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5609831760658432


| 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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