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Issue 753995 link

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Issue metadata

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



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16.7% regression in smoothness.tough_path_rendering_cases at 491819:491915

Project Member Reported by primiano@chromium.org, Aug 9 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=753995

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=29726621d493cb988bcee559f136a9001b58eae6ed1934bef728c610aed4a8a0


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

chromium-rel-win10
Cc: k...@chromium.org
Owner: k...@chromium.org
Status: Assigned (was: Untriaged)

=== Auto-CCing suspected CL author krb@chromium.org ===

Hi krb@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Kevin Bailey
  Commit : 3cda6c9c7ee5274ea800bce409691a15a949fc2c
  Date   : Thu Aug 03 23:20:18 2017
  Subject: [omnibox] Select-all after revert-all, in more cases

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : smoothness.tough_path_rendering_cases
  Metric       : frame_times/MotionMark Canvas Stroke Shapes
  Change       : 6.14% | 42.2615671251 -> 44.8555554262

Revision             Result                  N
chromium@491818      42.2616 +- 1.30599      6      good
chromium@491867      41.996 +- 2.81713       6      good
chromium@491873      42.5465 +- 1.68951      6      good
chromium@491874      44.9134 +- 1.35885      6      bad       <--
chromium@491875      45.3965 +- 2.7561       6      bad
chromium@491876      45.1184 +- 2.44642      6      bad
chromium@491879      46.1134 +- 4.97534      6      bad
chromium@491891      44.9707 +- 1.22682      6      bad
chromium@491915      44.8556 +- 1.08582      6      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=MotionMark.Canvas.Stroke.Shapes smoothness.tough_path_rendering_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971702989334027808


For feedback, file a bug with component Speed>Bisection

Comment 4 by k...@chromium.org, Aug 10 2017

Status: WontFix (was: Assigned)
Please see https://bugs.chromium.org/p/chromium/issues/detail?id=739303#c18

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