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Issue 776928 link

Starred by 1 user
Status: Duplicate
Owner: ----
Closed: Oct 2017
Cc:
█ pmeenan@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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45.9%-60.5% regression in system_health.common_mobile at 510075:510148

Project Member Reported by pmeenan@chromium.org, Oct 20 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Oct 20 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776928

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=690a7f960829f37ba7fd563ae998129be2122682d886e683bb146b552b8233c0


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

android-nexus6
android-webview-nexus5X
android-webview-nexus6
Project Member

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


=== BISECT JOB RESULTS ===
NO Perf regression found, tests failed to produce values

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstPaint_avg/background_search/background_search_google


To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=background.search.google system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965185729532118720


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

Comment 6 by 42576172...@developer.gserviceaccount.com, Oct 23 2017

Mergedinto: 776929
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Yi Gu
  Commit : bf1ce6b9e9cffee8a73f4cf3bc8658d0de2e7924
  Date   : Thu Oct 19 16:26:20 2017
  Subject: Remove the feature SkipCompositingSmallScrollers

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstPaint_avg/background_search/background_search_google
  Change       : 42.85% | 223.696333333 -> 319.556666667

Revision             Result                  N
chromium@510074      223.696 +- 13.2515      6      good
chromium@510092      221.816 +- 18.0954      6      good
chromium@510101      219.241 +- 12.5273      6      good
chromium@510102      323.481 +- 24.4511      6      bad       <--
chromium@510103      324.449 +- 21.7554      6      bad
chromium@510104      315.241 +- 12.8179      6      bad
chromium@510106      318.707 +- 25.9471      6      bad
chromium@510110      319.557 +- 30.2955      6      bad

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 --story-filter=background.search.google system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964930110938858864


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

Comment 7 by 42576172...@developer.gserviceaccount.com, Oct 23 2017 


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

Suspected Commit
  Author : Yi Gu
  Commit : bf1ce6b9e9cffee8a73f4cf3bc8658d0de2e7924
  Date   : Thu Oct 19 16:26:20 2017
  Subject: Remove the feature SkipCompositingSmallScrollers

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstContentfulPaint_avg/background_search/background_search_google
  Change       : 38.77% | 228.3505 -> 316.890833333

Revision             Result                  N
chromium@510074      228.35 +- 19.2276       6      good
chromium@510092      221.588 +- 21.6866      6      good
chromium@510101      223.324 +- 16.3016      6      good
chromium@510102      320.814 +- 9.68815      6      bad       <--
chromium@510103      326.622 +- 18.5288      6      bad
chromium@510104      324.031 +- 23.5361      6      bad
chromium@510106      318.803 +- 28.7633      6      bad
chromium@510110      316.891 +- 26.4994      6      bad

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 --story-filter=background.search.google system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964930127760160064


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

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