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Issue 736553 link

Starred by 3 users

Issue metadata

Status: Duplicate
Merged: issue 733705
Owner:
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.5%-12.1% regression in smoothness.tough_filters_cases at 477950:480528

Project Member Reported by sunn...@chromium.org, Jun 24 2017

Issue description

I'm splitting these out of issue 733705 because these are all thread time regressions.
 
Cc: kraynov@chromium.org
 Issue 735870  has been merged into this issue.
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Jun 25 2017

Mergedinto: 733705
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : f9a0da96d26ec1fe2121a8eef62f7bd7e9330555
  Date   : Tue Jun 13 22:16:40 2017
  Subject: Enable gpu scheduler on waterfall and developer builds.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_GPU_cpu_time_per_frame/thread_GPU_cpu_time_per_frame
  Change       : 12.98% | 1.1837240911 -> 1.33737163305

Revision             Result                    N
chromium@479146      1.18372 +- 0.0525903      6      good
chromium@479172      1.20312 +- 0.0216565      6      good
chromium@479174      1.16959 +- 0.0310031      6      good
chromium@479175      1.32664 +- 0.0172025      6      bad       <--
chromium@479176      1.34183 +- 0.0599066      6      bad
chromium@479179      1.33964 +- 0.0386828      6      bad
chromium@479185      1.33839 +- 0.0200644      6      bad
chromium@479197      1.33152 +- 0.0682974      6      bad
chromium@479247      1.33737 +- 0.0434144      6      bad

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

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8975948103023839968

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5880211167510528


| 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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