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Issue 690686 link

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Issue metadata

Status: Duplicate
Merged: issue 690208
Owner: ----
Closed: Feb 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3.1% regression in thread_times.simple_mobile_sites at 447266:447386

Project Member Reported by briander...@chromium.org, Feb 9 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=690686

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgmKyIpgkM


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Feb 10 2017

Mergedinto: 690208
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : ericrk
  Commit : 7f6a27f1dbe4d8cafffb919445bc93bb8867a8fe
  Date   : Tue Jan 31 22:34:32 2017
  Subject: Delay activation/draw on GPU tile work completion

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.simple_mobile_sites
  Metric       : thread_renderer_compositor_cpu_time_per_frame/thread_renderer_compositor_cpu_time_per_frame
  Change       : 2.53% | 2.24544855279 -> 2.30220182308

Revision             Result                    N
chromium@447265      2.24545 +- 0.0262087      6      good
chromium@447326      2.23241 +- 0.0133766      6      good
chromium@447341      2.25596 +- 0.0262618      6      good
chromium@447345      2.24979 +- 0.0261407      6      good
chromium@447346      2.28921 +- 0.0215565      6      bad       <--
chromium@447347      2.27527 +- 0.0148146      6      bad
chromium@447349      2.27608 +- 0.0202225      6      bad
chromium@447356      2.29358 +- 0.0173621      6      bad
chromium@447386      2.3022 +- 0.032579        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.simple_mobile_sites

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8988096207379001744

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5901185527054336


| 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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