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Issue metadata

Status: Duplicate
Merged: issue 735649
Owner:
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.9%-5.4% regression in media.tough_video_cases_tbmv2 at 480772:480915

Project Member Reported by mvstanton@google.com, Jun 22 2017

Issue description

See the link to graphs below.
 
This range includes Hannes' CL to reduce new-space size to 512K.
Project Member

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

Mergedinto: 735649
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : hpayer
  Commit : 0d2ed6c3287ec48ee06ec1b69287ed4bf0dd60d7
  Date   : Mon Jun 19 10:16:13 2017
  Subject: [heap] Allow a minimum semi-space size of 512K.

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/video.html?src_crowd2160.mp4
  Change       : 14.00% | 3364753.33333 -> 3835666.66667

Revision                           Result                  N
chromium@480792                    3364753 +- 291319       6      good
chromium@480814                    3571585 +- 44343.2      6      good
chromium@480820                    3571145 +- 45412.2      6      good
chromium@480821                    3568083 +- 61767.5      9      good
chromium@480821,v8@8a32788f39      3546752 +- 272667       9      good
chromium@480821,v8@f626d5df7e      3575074 +- 52718.4      9      good
chromium@480821,v8@bc717ae84b      3487455 +- 336003       6      good
chromium@480821,v8@0d2ed6c328      3803307 +- 1475.37      6      bad       <--
chromium@480821,v8@d6c9e534c8      3744429 +- 503608       9      bad
chromium@480821,v8@2325ef535f      3799989 +- 1552.36      6      bad
chromium@480822                    3835667 +- 1192.06      6      bad
chromium@480823                    3835613 +- 1152.98      6      bad
chromium@480825                    3835485 +- 1461.08      6      bad
chromium@480836                    3835504 +- 1304.37      6      bad
chromium@480879                    3835667 +- 1181.49      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=video.html.src.crowd2160.mp4 media.tough_video_cases_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8976096112608215168

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6661473369063424


| 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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