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Issue 800087 link

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Issue metadata

Status: Duplicate
Merged: issue 800084
Owner: ----
Closed: Jan 2018
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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5%-29% regression in loading.mobile at 527120:527265

Project Member Reported by mustaq@chromium.org, Jan 8 2018

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=800087

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d6dd3fe2324fe2514685aeebf2724613c9e44c4f6d57defeb12ace0ac9356b75


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

android-nexus5
android-nexus5X
android-nexus7v2
android-one
android-webview-nexus5X
Mergedinto: 800084
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Yutaka Hirano
  Commit : 834240f40e8a479ca1ff308b4154b5054f9612aa
  Date   : Fri Jan 05 06:51:58 2018
  Subject: Revert "Update RendererSideResourceScheduler testing config"

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : loading.mobile
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/Regular-3G/TheStar
  Change       : 23.91% | 2484.56283333 -> 3078.57433333

Revision             Result                  N
chromium@527227      2484.56 +- 55.0429      6      good
chromium@527232      2489.48 +- 33.5406      6      good
chromium@527233      3082.28 +- 59.2384      6      bad       <--
chromium@527234      3080.64 +- 100.545      6      bad
chromium@527235      3098.56 +- 176.774      6      bad
chromium@527237      3071.59 +- 57.2031      6      bad
chromium@527246      3115.14 +- 135.849      6      bad
chromium@527265      3078.57 +- 91.0013      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=TheStar loading.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8957932420261039232


For feedback, file a bug with component Speed>Bisection

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