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Issue metadata

Status: Duplicate
Merged: issue 705403
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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24.2%-107.1% regression in v8.infinite_scroll_tbmv2 at 459003:459041

Project Member Reported by toyoshim@chromium.org, Mar 27 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=705392

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrOfUpQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrOXHvQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrMqKkQgM


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

android-nexus5
android-nexus5X
android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 27 2017

Mergedinto: 705403
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : ksakamoto
  Commit : 3246896976ad46a095ef679b2421528536848059
  Date   : Thu Mar 23 09:28:28 2017
  Subject: Shorten the network 2-quiet window of FirstMeaningfulPaintDetector

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : v8.infinite_scroll_tbmv2
  Metric       : v8-gc-total_max/twitter
  Change       : 76.05% | 32.0948571429 -> 56.5044444444

Revision             Result                  N
chromium@459007      32.0949 +- 37.0026      14      good
chromium@459024      29.8418 +- 28.2896      14      good
chromium@459029      30.2347 +- 14.2685      6       good
chromium@459030      54.1928 +- 16.5077      6       bad       <--
chromium@459031      50.3547 +- 22.9375      6       bad
chromium@459033      47.1159 +- 45.1171      14      bad
chromium@459041      56.5044 +- 18.1986      9       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=twitter v8.infinite_scroll_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983987511760794768

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6432313438633984


| 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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