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Issue metadata

Status: Duplicate
Merged: issue 725114
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.7%-1.8% regression in memory.top_10_mobile at 472980:473149

Project Member Reported by jochen@chromium.org, May 22 2017

Issue description

See the link to graphs below.
 

Comment 1 by jochen@chromium.org, May 22 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=725007

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupiZ9goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2v32tAoM


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

android-nexus5X
android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 22 2017

Mergedinto: 725114
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Adam Klein
  Commit : 9397c1b73a607de3c836d9869527cf478668eb19
  Date   : Thu May 18 19:28:58 2017
  Subject: Revert "[parser] Refactor streaming scanner streams."

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/foreground
  Change       : 1.57% | 5463919.66667 -> 5549677.8

Revision                           Result                  N
chromium@472979                    5463920 +- 29580.0      6      good
chromium@473048                    5431618 +- 248808       9      good
chromium@473053                    5405384 +- 247560       6      good
chromium@473053,v8@f4da43618c      5465682 +- 60473.3      9      good
chromium@473053,v8@6b5e443972      5438144 +- 52177.4      6      good
chromium@473053,v8@9397c1b73a      5548045 +- 27358.6      6      bad       <--
chromium@473054                    5533184 +- 61848.6      6      bad
chromium@473055                    5561076 +- 35665.1      6      bad
chromium@473057                    5547559 +- 30681.8      6      bad
chromium@473066                    5524797 +- 251776       9      bad
chromium@473083                    5555565 +- 35455.1      6      bad
chromium@473117                    5549678 +- 42522.6      6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

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 memory.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978900808311457024

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5859392882212864


| 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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