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Issue metadata

Status: Duplicate
Owner: ----
Closed: Jan 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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8.3% regression in thread_times.key_silk_cases at 445772:445820

Project Member Reported by tdres...@chromium.org, Jan 26 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=685672

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgsMHDvQoM


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

android-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 27 2017

Mergedinto: 685179
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : wangxianzhu
  Commit : 9686be68e53348bab6f4ce846bf07d494f1575a0
  Date   : Tue Jan 24 19:34:26 2017
  Subject: Enable SlimmingPaintInvalidation

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_renderer_main_cpu_time_per_frame/thread_renderer_main_cpu_time_per_frame
  Change       : 8.49% | 4.81270457461 -> 5.2210839901

Revision             Result                    N
chromium@445771      4.8127 +- 0.109055        6      good
chromium@445775      4.81192 +- 0.0953932      6      good
chromium@445777      4.82401 +- 0.105323       6      good
chromium@445778      5.26075 +- 0.0703409      6      bad       <--
chromium@445784      5.23185 +- 0.119262       6      bad
chromium@445796      5.2481 +- 0.102913        6      bad
chromium@445820      5.22108 +- 0.144959       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.key_silk_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8989385296570633808

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5519779596599296


| 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 Tests>AutoBisect.  Thank you!

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