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Issue metadata

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



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A zero-to-nonzero to 6.2% regression in v8.runtimestats.browsing_mobile at 470434:470540

Project Member Reported by tebbi@chromium.org, May 12 2017

Issue description

See the link to graphs below.
 

Comment 1 by tebbi@chromium.org, May 12 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=721699

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgypbAtgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqojolAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqojR_QkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyv_RpgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqsaS6QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqragsAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquX5uAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyp--4wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqvW9rgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqqOiuAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquKY9AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqv3LuQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqqjhpQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgysOq7AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquq-pgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyo_69ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqs76vQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg6piRogkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpbP6ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqtH4pQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgytuRnQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyvey7QkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyvey7QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpi6oAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqoDysAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquHEvQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyvvLtQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquiOqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqsWPogkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqoqS_AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqoqS_AkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpalkgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqsyTowsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpGw9woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpHV8AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqsaS6QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqojolAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgyr-FrAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgytv_sgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqtzSvwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqt_HogoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqsGAigoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpbPqgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpbPqgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqv3wrwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgquGOswoM


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

android-nexus5
android-nexus5X
android-nexus6
android-webview-nexus6
chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 12 2017

Mergedinto: 721238
Status: Duplicate (was: Untriaged)

=== 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_nexus5X_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : Parse-Background:duration_avg/browse_social/browse_social_twitter

Revision             Result                  N
chromium@470467      0.0 +- 0.0              6      good
chromium@470486      0.0 +- 0.0              6      good
chromium@470489      0.0 +- 0.0              6      good
chromium@470490      27.3163 +- 9.23216      6      bad       <--
chromium@470491      23.2902 +- 6.78401      6      bad
chromium@470495      23.5862 +- 3.40556      6      bad
chromium@470504      22.7935 +- 3.85908      6      bad
chromium@470540      23.34 +- 4.75255        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=browse.social.twitter v8.runtimestats.browsing_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979813501999980576

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5290583217668096


| 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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