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Issue 759722 link

Starred by 1 user

Issue metadata

Status: WontFix
Owner: ----
Closed: Dec 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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70.1% regression in smoothness.top_25_smooth at 495148:495207

Project Member Reported by kraynov@chromium.org, Aug 28 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759722

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=11ea0e036fcc8fbc9fb2380a836b96b8882470965bd966b6f011f595310218e7


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

chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 28 2017


=== BISECT JOB RESULTS ===
Bisect was unable to run to completion

The bisect was able to narrow the range, you can try running with:
  good_revision: fbb03dd16b7d9a749d127f0252dfea5f324bb954
  bad_revision : c9126ec981a4f32d6219cee1eee3a976dba5cead

If failures persist contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : first_gesture_scroll_update_latency/https___www.google.com_calendar_
  Change       : 65.47% | 2.92283333333 -> 4.8365

Revision             Result                   N
chromium@495147      2.92283 +- 0.340469      6      good
chromium@495162      2.95117 +- 0.195496      6      good
chromium@495170      3.06017 +- 0.252751      6      good
chromium@495172      2.84883 +- 0.119368      6      good
chromium@495174      4.914 +- 0.259056        6      bad
chromium@495177      4.89583 +- 0.182469      6      bad
chromium@495207      4.8365 +- 0.350448       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=https...www.google.com.calendar. smoothness.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969998480487817936


For feedback, file a bug with component Speed>Bisection
Trying a pinpoint bisect.
๐Ÿ“ Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/16cf5a71780000
๐Ÿ“ Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/16cf5a71780000

Change tests that fail with wheel scroll latching and async wheel on.
By sahel@chromium.org ยท Thu Aug 17 14:56:44 2017
chromium @ 955c32907a2c9921065fa628e0b8b5b28a7afe6c

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions
Status: WontFix (was: Untriaged)
Bisect unable to find culprit, this regression exists in stable. Ignoring.

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