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Issue 694630 link

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Issue metadata

Status: Duplicate
Merged: issue 692961
Owner: ----
Closed: Feb 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.6% regression in smoothness.top_25_smooth at 449894:449901

Project Member Reported by rsch...@chromium.org, Feb 21 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=694630

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghJSw4AgM


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

chromium-rel-win8-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Feb 21 2017

Mergedinto: 692961
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : chrishtr
  Commit : 56850c99e856e368af5f440d75d8e8bdb13608f1
  Date   : Sun Feb 12 22:30:57 2017
  Subject: [SPInvalidation] Use GeometryMapper in PaintLayerClipper for paint.

Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___www.youtube.com
  Change       : 0.15% | 6.46733333333 -> 6.45788888889

Revision             Result                    N
chromium@449893      6.46733 +- 1.87301        9      good
chromium@449897      6.30333 +- 0.0829538      6      good
chromium@449898      6.209 +- 0.073973         6      good
chromium@449899      6.4185 +- 0.0346049       6      bad       <--
chromium@449901      6.45789 +- 0.195696       9      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=http...www.youtube.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8987028901241888784

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5781282883108864


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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