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Issue metadata

Status: Duplicate
Merged: issue 719025
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.3%-20.1% regression in memory.desktop at 469178:469418

Project Member Reported by ulan@google.com, May 8 2017

Issue description

See the link to graphs below.
 
Mergedinto: 719025
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : mlippautz
  Commit : bf74d43de055393d97a3db4f01e4c832e35af10f
  Date   : Wed May 03 21:31:06 2017
  Subject: [heap] MinorMC: Evacuation for young generation

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : memory.desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/TrivialBlinkingCursorPageSharedPageState
  Change       : 16.81% | 5386240.0 -> 6291456.0

Revision                           Result              N
chromium@469177                    5386240 +- 0.0      6      good
chromium@469228                    5386240 +- 0.0      6      good
chromium@469253                    5386240 +- 0.0      6      good
chromium@469257                    5386240 +- 0.0      6      good
chromium@469258                    5386240 +- 0.0      6      good
chromium@469258,v8@bf74d43de0      6291456 +- 0.0      6      bad       <--
chromium@469258,v8@ff8039d73a      6291456 +- 0.0      6      bad
chromium@469259                    6291456 +- 0.0      6      bad
chromium@469260                    6291456 +- 0.0      6      bad
chromium@469266                    6291456 +- 0.0      6      bad
chromium@469278                    6291456 +- 0.0      6      bad
chromium@469378                    6291456 +- 0.0      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=TrivialBlinkingCursorPageSharedPageState memory.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980176540734220336

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6113713230184448


| 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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