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Issue 714900 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression

Blocked on:
issue 711196



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4.9% regression in smoothness.sync_scroll.key_mobile_sites_smooth at 465567:465625

Project Member Reported by rsch...@chromium.org, Apr 25 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=714900

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgopn4uwkM


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

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Apr 25 2017

Cc: hablich@chromium.org
Owner: hablich@chromium.org

=== Auto-CCing suspected CL author hablich@chromium.org ===

Hi hablich@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : hablich
  Commit : 990315f377a2df9604edcad7b6f9c2d1c53dd059
  Date   : Wed Apr 19 15:41:18 2017
  Subject: Revert of [scheduler] Move some task types to suspendable task runner. (patchset #1 id:1 of https://codereview.chromium.org/2808273003/ )

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : frame_times/http___www.cnn.com_2012_10_03_politics_michelle-obama-debate_index.html
  Change       : 3.87% | 18.4466093134 -> 19.1608350709

Revision             Result                   N
chromium@465566      18.4466 +- 1.76685       14      good
chromium@465596      18.4845 +- 1.85577       9       good
chromium@465611      18.18 +- 0.335273        6       good
chromium@465618      18.2829 +- 0.372085      6       good
chromium@465619      18.9036 +- 0.500871      6       bad       <--
chromium@465620      18.9227 +- 0.413021      6       bad
chromium@465622      19.0221 +- 0.725813      6       bad
chromium@465625      19.1608 +- 0.729353      9       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 --story-filter=http...www.cnn.com.2012.10.03.politics.michelle.obama.debate.index.html smoothness.sync_scroll.key_mobile_sites_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8981385275305846480

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5211759142502400


| 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!
Blockedon: 711196
Owner: ----
Status: Available (was: Untriaged)
This was for a revert regarding 711196.
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Apr 26 2017

Cc: jgruber@chromium.org msramek@chromium.org
 Issue 715133  has been merged into this issue.
Status: WontFix (was: Available)
WontFix-ing because the regression was caused by a revert.

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