New issue
Advanced search Search tips
Note: Color blocks (like or ) mean that a user may not be available. Tooltip shows the reason.

Issue 722346 link

Starred by 1 user

Issue metadata

Status: Duplicate
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

62.2% improvement in page_cycler_v2.intl_ko_th_vi at 470445:470501

Project Member Reported by yhirano@chromium.org, May 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=722346

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg6pXxoAsM


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 16 2017

Mergedinto: 721238
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.intl_ko_th_vi
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/http___www.daum.net_
  Change       : 60.87% | 933.161166667 -> 365.176333333

Revision             Result                  N
chromium@470444      933.161 +- 799.655      6      good
chromium@470473      1014.65 +- 616.06       6      good
chromium@470487      918.137 +- 952.668      9      good
chromium@470489      912.336 +- 985.6        9      good
chromium@470490      365.166 +- 157.351      6      bad       <--
chromium@470491      382.955 +- 214.846      9      bad
chromium@470494      354.015 +- 147.087      6      bad
chromium@470501      365.176 +- 172.751      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 --story-filter=http...www.daum.net. page_cycler_v2.intl_ko_th_vi

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979523299478079184

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6187163948941312


| 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!

Sign in to add a comment