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Issue metadata

Status: Duplicate
Merged: issue 705619
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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16%-39.8% regression in smoothness.top_25_smooth at 459640:459662

Project Member Reported by lanwei@chromium.org, Mar 30 2017

Issue description

See the link to graphs below.
 

Comment 1 by lanwei@chromium.org, Mar 30 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=706889

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7Pm-8AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7M66oAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7PDusgkM


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

chromium-rel-win7-x64-dual
chromium-rel-win8-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 30 2017

Mergedinto: 705619
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : sugoi
  Commit : 7ae2ba1892a8b4dee8d7c231ac0e0fbe66588912
  Date   : Sat Mar 25 13:59:47 2017
  Subject: Solving some telemetry tests' slowness

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___booking.com
  Change       : 43.21% | 3.07316666667 -> 4.40116666667

Revision             Result                   N
chromium@459639      3.07317 +- 0.693477      6      good
chromium@459646      2.64567 +- 0.307082      6      good
chromium@459650      2.77367 +- 0.459571      6      good
chromium@459651      3.68617 +- 0.661957      6      bad       <--
chromium@459652      3.94756 +- 1.39377       9      bad
chromium@459653      4.40117 +- 1.25205       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=http...booking.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983674948421694064

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5841560383520768


| 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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