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Issue metadata

Status: Duplicate
Merged: issue 606891
Owner:
Last visit > 30 days ago
Closed: Apr 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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8.5% regression in thread_times.key_silk_cases at 389548:389583

Project Member Reported by pmeenan@chromium.org, Apr 27 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=607304

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg5LfxpgkM


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

android-nexus9
Project Member

Comment 2 by 42576172...@developer.gserviceaccount.com, Apr 28 2016

Mergedinto: 606891
Status: Duplicate (was: Assigned)

===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : (Reland) content: Enable image decode tasks on android.
Author  : vmpstr
Commit description:
  
This patch enables image decode tasks on android.

R=enne@chromium.org, sievers@chromium.org

Review URL: https://codereview.chromium.org/1903973004

Cr-Commit-Position: refs/heads/master@{#389579}
Commit  : 6c0b5111741a42f7f4abc0d839c074bedde118a8
Date    : Mon Apr 25 22:14:43 2016


===== TESTED REVISIONS =====
Revision         Mean      Std Dev     N  Good?
chromium@389547  0.767907  0.0114305   5  good
chromium@389565  0.808562  0.0060047   5  good
chromium@389574  0.783742  0.0114594   5  good
chromium@389577  0.781723  0.0218128   5  good
chromium@389578  0.793594  0.0173031   5  good
chromium@389579  0.84462   0.0183896   5  bad    <--
chromium@389583  0.8522    0.00510087  5  bad

Bisect job ran on: android_nexus9_perf_bisect
Bug ID: 607304

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests thread_times.key_silk_cases
Test Metric: thread_raster_cpu_time_per_frame/thread_raster_cpu_time_per_frame
Relative Change: 10.98%
Score: 99.8

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus9_perf_bisect/builds/1760
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9014194184837152688


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5841692435939328

| 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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