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Issue metadata

Status: Duplicate
Merged: issue 700800
Owner:
Closed: Mar 2017
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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14.2% regression in v8.runtimestats.browsing_desktop_turbo at 454961:455034

Project Member Reported by jgruber@chromium.org, Mar 20 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=703131

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1ML4owkM


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

chromium-rel-win7-x64-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 20 2017


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

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_turbo
  Metric       : v8-gc-total_max/browse_media/browse_media_imgur

Revision             Result                  N
chromium@454960      107.74 +- 22.4834       21      good
chromium@455034      105.583 +- 32.1867      21      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.media.imgur v8.runtimestats.browsing_desktop_turbo

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8984594643895420112

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5821083690729472


| 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, Mar 21 2017


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

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_turbo
  Metric       : v8-gc-total_max/browse_media/browse_media_imgur

Revision             Result                  N
chromium@454900      106.453 +- 29.3619      21      good
chromium@455084      108.867 +- 4.94985      21      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.media.imgur v8.runtimestats.browsing_desktop_turbo

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8984528258901989200

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4559733802926080


| 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 7 by 42576172...@developer.gserviceaccount.com, Mar 21 2017

Mergedinto: 700800
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Michael Lippautz
  Commit : 68d6b6c613c8641748a390a10d886859e5afa38b
  Date   : Fri Mar 03 12:10:33 2017
  Subject: [heap] Support for minor MC marking during incremental marking part 2

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_turbo
  Metric       : v8-gc-total_max/browse_media/browse_media_imgur
  Change       : 14.84% | 92.3705555556 -> 106.075666667

Revision                           Result                  N
chromium@454707                    92.3706 +- 19.7761      9      good
chromium@454790                    93.6454 +- 19.3993      9      good
chromium@454793                    91.5518 +- 18.5474      6      good
chromium@454794                    94.2702 +- 1.57583      6      good
chromium@454794,v8@de52562d8e      95.2993 +- 1.33038      6      good
chromium@454794,v8@f7bc5ef0bc      94.3512 +- 2.09901      6      good
chromium@454794,v8@14106d2d51      93.9973 +- 2.63183      6      good
chromium@454794,v8@68d6b6c613      109.402 +- 1.16213      6      bad       <--
chromium@454794,v8@1a6487fd65      109.312 +- 6.16543      6      bad
chromium@454795                    106.47 +- 5.45065       6      bad
chromium@454796                    109.277 +- 3.47158      6      bad
chromium@454802                    108.501 +- 1.21379      6      bad
chromium@454812                    108.439 +- 2.64426      6      bad
chromium@454833                    106.543 +- 23.2514      9      bad
chromium@454875                    108.404 +- 6.73096      6      bad
chromium@455034                    106.076 +- 18.8218      9      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.media.imgur v8.runtimestats.browsing_desktop_turbo

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8984512670087634496

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4953328850567168


| 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, Mar 23 2017


=== BISECT JOB RESULTS ===
Perf regression found but unable to continue

Bisect was stopped because a commit couldn't be classified as either
good or bad.


Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_turbo
  Metric       : v8-gc-total_max/browse_media/browse_media_imgur

Revision             Result                  N
chromium@454900      104.622 +- 35.6867      21       good
chromium@454923      107.575 +- 7.98959      21       good
chromium@454935      106.292 +- 22.7406      21       good
chromium@454941      106.582 +- 30.9986      21       unknown
chromium@454946      ---                     ---      build failure
chromium@454947      108.34 +- 25.6231       21       bad
chromium@454992      107.584 +- 23.574       14       bad
chromium@455084      108.902 +- 7.29724      21       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.media.imgur v8.runtimestats.browsing_desktop_turbo

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8984382488099013184

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4559733802926080


| 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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