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Issue 707855 link

Starred by 3 users

Issue metadata

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



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112.2% regression in system_health.common_mobile at 460686:460716

Project Member Reported by samans@chromium.org, Apr 3 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=707855

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3LmuowsM


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

android-nexus5
Cc: ksakamoto@chromium.org
Owner: ksakamoto@chromium.org

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

Hi ksakamoto@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 : ksakamoto
  Commit : dd3783e3fbc682b2140333c56f446c1570cbe4b8
  Date   : Thu Mar 30 08:57:46 2017
  Subject: Detached FrameLoader should not log snapshot trace events

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstContentfulPaint_avg/browse_news/browse_news_nytimes
  Change       : 79.75% | 554.255017094 -> 996.267033333

Revision             Result                  N
chromium@460685      554.255 +- 467.768      9      good
chromium@460701      503.806 +- 500.846      9      good
chromium@460702      550.449 +- 811.376      9      good
chromium@460703      949.124 +- 103.99       9      bad       <--
chromium@460705      895.494 +- 88.1045      6      bad
chromium@460709      923.547 +- 27.397       6      bad
chromium@460716      996.267 +- 293.929      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=browse.news.nytimes system_health.common_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983311143424989536

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5327589566054400


| 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!
Status: WontFix (was: Assigned)
Cc: pmeenan@chromium.org
 Issue 708564  has been merged into this issue.
 Issue 708652  has been merged into this issue.

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