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Issue 722276 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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43.5% improvement in page_cycler_v2.top_10_mobile 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=722276

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyuLr-AkM


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.top_10_mobile
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/http___www.baidu.com_s?word_google
  Change       : 51.45% | 454.607166667 -> 220.718333333

Revision             Result                  N
chromium@470456      454.607 +- 111.449      6      good
chromium@470477      424.553 +- 30.3859      6      good
chromium@470487      429.011 +- 31.2368      6      good
chromium@470489      427.383 +- 53.5418      6      good
chromium@470490      220.565 +- 5.28217      5      bad       <--
chromium@470492      216.325 +- 17.4599      6      bad
chromium@470497      220.718 +- 14.8119      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=http...www.baidu.com.s.word.google page_cycler_v2.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979537355245165520

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5504392192589824


| 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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