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Issue metadata

Status: Duplicate
Merged: issue 735071
Owner:
Closed: Jun 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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18.9% regression in v8.runtimestats.browsing_mobile at 480313:480453

Project Member Reported by jarin@google.com, Jun 20 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 2 by 42576172...@developer.gserviceaccount.com, Jun 20 2017

Mergedinto: 735071
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Yutaka Hirano
  Commit : 84047549ac37bab70d7306566c912e59131f3e1f
  Date   : Mon Jun 19 04:16:15 2017
  Subject: [Loading] Save one post-task when the data pipe is ready on arrival

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : Total:duration_avg/browse_shopping/browse_shopping_avito
  Change       : 23.11% | 29964.7663333 -> 36889.9711667

Revision             Result                  N
chromium@480312      29964.8 +- 1948.44      6      good
chromium@480330      29343.5 +- 836.841      6      good
chromium@480339      29345.1 +- 1443.22      6      good
chromium@480341      29222.6 +- 1854.4       6      good
chromium@480342      35460.8 +- 2543.08      6      bad       <--
chromium@480344      34557.2 +- 3127.19      6      bad
chromium@480348      34501.2 +- 1897.59      6      bad
chromium@480383      35912.8 +- 1469.66      6      bad
chromium@480453      36890.0 +- 3286.79      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=browse.shopping.avito v8.runtimestats.browsing_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8976286706318324784

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6116690003230720


| 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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