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Issue metadata

Status: Duplicate
Merged: issue 699736
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.3%-13.6% regression in v8.infinite_scroll-ignition_tbmv2 at 455282:455394

Project Member Reported by benhenry@google.com, Mar 9 2017

Issue description

This is effecting other stories/metrics/benchmarks that aren't listed in the title.

memory.top_10_mobile_stress, etc.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 10 2017

Mergedinto: 699736
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Ross McIlroy
  Commit : f774d8c56f00de92614886fc4cb541411eff7aa1
  Date   : Tue Mar 07 20:41:12 2017
  Subject: [Flags] Add negation implications for --turbo negative so --no-turbo works.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : v8.infinite_scroll-ignition_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg
  Change       : 15.82% | 18739995.2 -> 21703829.0

Revision                           Result                   N
chromium@455281                    18739995 +- 1575497      6      good
chromium@455285                    18912480 +- 1245402      6      good
chromium@455287                    18888457 +- 186979       6      good
chromium@455288                    18950406 +- 913494       6      good
chromium@455288,v8@f774d8c56f      21709637 +- 1898717      6      bad       <--
chromium@455288,v8@181a1b4dff      21999897 +- 1461821      6      bad
chromium@455289                    21922565 +- 739037       6      bad
chromium@455296                    21655734 +- 672582       6      bad
chromium@455310                    21853255 +- 416322       6      bad
chromium@455338                    21892426 +- 821975       6      bad
chromium@455394                    21703829 +- 960121       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 v8.infinite_scroll-ignition_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985574072678181184

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5391176942747648


| 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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