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Issue 783625 link

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Issue metadata

Status: Duplicate
Merged: issue 783621
Owner: ----
Closed: Nov 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.2%-99.3% regression in system_health.common_mobile at 515118:515129

Project Member Reported by alexclarke@chromium.org, Nov 10 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Nov 10 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783625

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=31378537c51734f1f1b0444247192f08e5b852ee161fb8dc1b0f570de623dfc3


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Nov 10 2017

Mergedinto: 783621
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Kouhei Ueno
  Commit : e1cfaee91ad08478fbd956fcd73d570032702397
  Date   : Thu Nov 09 08:23:01 2017
  Subject: Revert "Make script cache hits async"

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstPaint_avg/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 99.71% | 1820.49433333 -> 3635.78133333

Revision             Result                  N
chromium@515117      1820.49 +- 36.0023      6      good
chromium@515120      1822.98 +- 46.0485      6      good
chromium@515121      3626.92 +- 102.593      6      bad       <--
chromium@515122      3640.75 +- 76.0404      6      bad
chromium@515123      3684.93 +- 231.075      6      bad
chromium@515129      3635.78 +- 70.0929      6      bad

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=browse.tech.discourse.infinite.scroll 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/8963323586078792192


For feedback, file a bug with component Speed>Bisection

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