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Issue 778588 link

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Issue metadata

Status: Duplicate
Merged: issue 778587
Owner: ----
Closed: Oct 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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81.2% regression in thread_times.tough_scrolling_cases at 511369:511403

Project Member Reported by kraynov@chromium.org, Oct 26 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Oct 26 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=778588

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ba8049e9a5c69a5cf33827d11e17a2cc04437f0660b13fe6aa403e748a71521a


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Oct 26 2017

Mergedinto: 778587
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : David Bokan
  Commit : dbab215523c8d77a7b54fcf3776357b079c36899
  Date   : Tue Oct 24 14:24:10 2017
  Subject: Fix telemetry gesture speeds

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : thread_times.tough_scrolling_cases
  Metric       : thread_total_all_cpu_time_per_frame/text_hover_20000_pixels_per_second
  Change       : 80.58% | 145.456555556 -> 262.659

Revision                                 Result                  N
chromium@511368                          145.457 +- 6.11044      6      good
chromium@511386                          147.048 +- 4.17258      6      good
chromium@511395                          144.228 +- 6.4806       6      good
chromium@511397                          145.024 +- 5.16816      6      good
chromium@511397,catapult@f9691b256a      148.04 +- 7.95597       6      good
chromium@511397,catapult@dbab215523      262.039 +- 11.0008      6      bad       <--
chromium@511397,catapult@2f4cf37a9f      262.891 +- 8.13806      6      bad
chromium@511398                          264.752 +- 10.5399      6      bad
chromium@511399                          261.621 +- 6.6205       6      bad
chromium@511403                          262.659 +- 6.07523      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=text.hover.20000.pixels.per.second thread_times.tough_scrolling_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964678002471782224


For feedback, file a bug with component Speed>Bisection

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