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Issue metadata

Status: Duplicate
Merged: issue 661927
Owner: ----
Closed: Nov 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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12.3%-18% regression in thread_times.simple_mobile_sites at 429004:429317

Project Member Reported by briander...@chromium.org, Nov 7 2016

Issue description

See the link to graphs below.
 
Mergedinto: 661927
Status: Duplicate (was: Untriaged)

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


===== SUSPECTED CL(s) =====
Subject : Add crash keys to TaskQueueManager::ProcessTaskFromWorkQueue
Author  : alexclarke
Commit description:
  
We suspect a bad task closure is getting posted and would like to
add crash keys to aid diagnosis.

BUG=660427

Review-Url: https://codereview.chromium.org/2464853002
Cr-Commit-Position: refs/heads/master@{#429285}
Commit  : c08c078b27b353f4ab8de7deccfb862270b1ff2a
Date    : Wed Nov 02 15:49:06 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@429245  5.88962  0.146404  5  good
chromium@429268  6.00371  0.178636  5  good
chromium@429280  5.90275  0.115297  5  good
chromium@429283  5.98246  0.163354  8  good
chromium@429284  6.23752  0.141288  8  good
chromium@429285  6.56915  0.217164  8  bad    <--
chromium@429286  6.38968  0.216309  5  bad
chromium@429291  6.36502  0.112958  5  bad

Bisect job ran on: android_nexus5_perf_bisect
Bug ID: 663087

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.key_mobile_sites_smooth
Test Metric: thread_renderer_main_cpu_time_per_frame/thread_renderer_main_cpu_time_per_frame
Relative Change: 8.07%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4324
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996614082146227552


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5894076673556480

| 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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