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Issue 762224 link

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Issue metadata

Status: Duplicate
Merged: issue 760886
Owner: ----
Closed: Sep 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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11.7%-17.9% regression in scheduler.tough_scheduling_cases at 498541:498668

Project Member Reported by briander...@chromium.org, Sep 5 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=762224

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c15e1aa4c3620739e8124935c5b2171ccd6ceeef09ecb8364acbb88bf46d9e92


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

chromium-rel-mac11
win-high-dpi
Mergedinto: 760966
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : c7a7949c958b4867600ca716968da430fd9b952f
  Date   : Wed Aug 30 22:21:33 2017
  Subject: cc: Flush command buffers when all tiles are done.

Bisect Details
  Configuration: winx64_high_dpi_perf_bisect
  Benchmark    : scheduler.tough_scheduling_cases
  Metric       : mean_input_event_latency/raf_animation.html
  Change       : 16.95% | 14.716 -> 17.2097777778

Revision             Result                   N
chromium@498547      14.716 +- 0.89616        9      good
chromium@498608      14.7472 +- 0.730439      9      good
chromium@498638      14.7433 +- 0.491463      9      good
chromium@498639      14.7302 +- 0.322315      6      good
chromium@498640      17.6692 +- 2.19907       6      bad       <--
chromium@498642      17.567 +- 1.68546        6      bad
chromium@498646      17.5778 +- 2.33012       6      bad
chromium@498653      17.69 +- 2.22338         6      bad
chromium@498668      17.2098 +- 4.04784       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=raf.animation.html scheduler.tough_scheduling_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969255966448121312


For feedback, file a bug with component Speed>Bisection
Mergedinto: -760966 760886

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