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Issue 784352 link

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Issue metadata

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



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32.9%-18917.2% regression in loading.mobile at 515618:515740

Project Member Reported by tdres...@chromium.org, Nov 13 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Nov 13 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=784352

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1375ddfa26ff17d70b01b62c84645fd073c30f6aa29ea24f5d4e48ec2d24a166


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

android-webview-nexus6
Status: WontFix (was: Untriaged)
Revert of recent improvement.
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Nov 13 2017

Cc: crouleau@chromium.org
Owner: crouleau@chromium.org
Status: Assigned (was: WontFix)

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

Hi crouleau@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 : Caleb Rouleau
  Commit : 46cf2b51bb3b56831ded3ffb60400f51091400ea
  Date   : Fri Nov 10 22:23:42 2017
  Subject: [Telemetry] give traffic_setting to parent. Fix Bug.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : loading.mobile
  Metric       : timeToFirstContentfulPaint_avg/cold_Regular-3G/FlipBoard
  Change       : 3051.08% | 244.059333333 -> 7690.499

Revision             Result                  N
chromium@515617      244.059 +- 25.6785      6      good
chromium@515679      254.931 +- 40.5166      6      good
chromium@515710      250.007 +- 23.6575      6      good
chromium@515712      251.182 +- 53.093       6      good
chromium@515713      269.621 +- 53.6954      6      good
chromium@515714      7777.14 +- 641.572      6      bad       <--
chromium@515718      7668.02 +- 123.625      6      bad
chromium@515725      7659.96 +- 80.8801      6      bad
chromium@515740      7690.5 +- 198.504       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=FlipBoard loading.mobile

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963036309434725392


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Nov 13 2017

 Issue 784339  has been merged into this issue.
Status: WontFix (was: Assigned)
The graph shows this is just reverting to the previous state before I broke the tests.

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