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Issue metadata

Status: Duplicate
Merged: issue 725949
Owner: ----
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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23.8%-231.5% regression in v8.runtimestats.browsing_desktop_classic at 473800:474029

Project Member Reported by jgruber@chromium.org, May 30 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 30 2017


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: winx64ati_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : v8-gc-memory-mark-compactor_avg/browse_news/browse_news_flipboard

Revision             Result                  N
chromium@473799      8.38332 +- 2.29754      10      good
chromium@473937      7.98367 +- 2.44152      12      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=browse.news.flipboard v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978168977183441152

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5327339203854336


| 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!
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, May 30 2017


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: winx64ati_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : v8-gc-memory-mark-compactor_avg/browse_news/browse_news_flipboard

Revision             Result                  N
chromium@473799      8.84957 +- 2.44743      7      good
chromium@473937      9.15536 +- 2.52091      7      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=browse.news.flipboard v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978159450876107456

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5327339203854336


| 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!
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, May 31 2017

Mergedinto: 725949
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : sadrul
  Commit : a6251cb3214b42349e7208d285a5e2e01276fe6f
  Date   : Tue May 23 16:06:27 2017
  Subject: input: Dispatch synthesized events at regular intervals.

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : v8-gc-incremental-start_max/browse_news/browse_news_flipboard
  Change       : 32.57% | 0.2185 -> 0.289666666667

Revision             Result                     N
chromium@473879      0.2185 +- 0.0289741        6      good
chromium@473917      0.219833 +- 0.0271078      6      good
chromium@473920      0.219333 +- 0.0205264      6      good
chromium@473921      0.228667 +- 0.0610191      6      good
chromium@473922      0.301 +- 0.0560357         6      bad       <--
chromium@473927      0.292667 +- 0.101997       6      bad
chromium@473936      0.290167 +- 0.0209483      6      bad
chromium@473954      0.288333 +- 0.0168325      6      bad
chromium@474029      0.289667 +- 0.0252058      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=browse.news.flipboard v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978101105171017984

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5017919961956352


| 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!
Project Member

Comment 9 by 42576172...@developer.gserviceaccount.com, May 31 2017


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

Suspected Commit
  Author : sadrul
  Commit : a6251cb3214b42349e7208d285a5e2e01276fe6f
  Date   : Tue May 23 16:06:27 2017
  Subject: input: Dispatch synthesized events at regular intervals.

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : v8-gc-incremental-start_max/browse_news/browse_news_flipboard
  Change       : 29.19% | 0.222666666667 -> 0.287666666667

Revision             Result                     N
chromium@473879      0.222667 +- 0.0336353      6      good
chromium@473917      0.222167 +- 0.031541       6      good
chromium@473920      0.224667 +- 0.0273374      6      good
chromium@473921      0.227167 +- 0.0238921      6      good
chromium@473922      0.2885 +- 0.00821584       6      bad       <--
chromium@473927      0.301833 +- 0.0366447      6      bad
chromium@473936      0.3035 +- 0.0689891        6      bad
chromium@473954      0.326667 +- 0.179887       6      bad
chromium@474029      0.287667 +- 0.0213385      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=browse.news.flipboard v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978101095477915360

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6339756679495680


| 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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