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Issue 757739 link

Starred by 1 user
Status: Duplicate
Merged: issue 757342
Owner:
tebbi@chromium.org
Closed: Aug 2017
Cc:
tebbi@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.9%-21.5% regression in v8.runtimestats.browsing_desktop at 495785:495808

Project Member Reported by tebbi@chromium.org, Aug 22 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 22 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=757739

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7fc8d83d76c373da299cf0810be35b398cf474235262fe17a9820db4e4c869f7


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

chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
Project Member

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


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

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : API:duration_avg/browse_search/browse_search_google

Revision             Result                  N
chromium@495791      27.6571 +- 21.8108      21      good
chromium@495808      26.339 +- 15.214        21      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.search.google v8.runtimestats.browsing_desktop

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970573374751791616


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Aug 22 2017

Mergedinto: 757342
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Nico Weber
  Commit : 7cd2f6bd73c6a9c6200704e995b18ebb3168ead6
  Date   : Sat Aug 19 04:23:54 2017
  Subject: win: Turn off clang-by-default again for now.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : speedometer2
  Metric       : Inferno-TodoMVC/Speedometer2
  Change       : 20.46% | 916.692333333 -> 1104.2825

Revision             Result                  N
chromium@495791      916.692 +- 10.646       6      good
chromium@495800      917.709 +- 10.5517      6      good
chromium@495801      919.274 +- 14.2466      6      good
chromium@495802      1101.55 +- 8.4099       6      bad       <--
chromium@495804      1098.99 +- 4.1219       6      bad
chromium@495808      1104.28 +- 9.36903      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=Speedometer2 speedometer2

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970556304401326400


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Aug 22 2017 


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

Suspected Commit
  Author : Nico Weber
  Commit : 7cd2f6bd73c6a9c6200704e995b18ebb3168ead6
  Date   : Sat Aug 19 04:23:54 2017
  Subject: win: Turn off clang-by-default again for now.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : Compile:duration_avg/browse_news/browse_news_flipboard
  Change       : 6.42% | 111.8185 -> 117.437857143

Revision             Result                  N
chromium@495791      111.818 +- 12.5702      14      good
chromium@495799      109.338 +- 5.46241      6       good
chromium@495801      109.539 +- 8.96469      6       good
chromium@495802      119.869 +- 9.30064      6       bad       <--
chromium@495804      117.343 +- 5.27099      6       bad
chromium@495808      117.438 +- 19.546       14      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

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970556154532267072


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 9 by 42576172...@developer.gserviceaccount.com, Aug 22 2017 


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

Suspected Commit
  Author : Nico Weber
  Commit : 7cd2f6bd73c6a9c6200704e995b18ebb3168ead6
  Date   : Sat Aug 19 04:23:54 2017
  Subject: win: Turn off clang-by-default again for now.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : speedometer2
  Metric       : jQuery-TodoMVC/Speedometer2
  Change       : 6.64% | 751.102416667 -> 800.990583333

Revision             Result                  N
chromium@495791      751.102 +- 18.4031      6      good
chromium@495800      751.756 +- 16.5695      6      good
chromium@495801      755.6 +- 15.0525        6      good
chromium@495802      818.263 +- 11.1822      6      bad       <--
chromium@495804      812.5 +- 22.0989        6      bad
chromium@495808      800.991 +- 29.1755      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=Speedometer2 speedometer2

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970556137857353488


For feedback, file a bug with component Speed>Bisection
►

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