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Issue 760150 link

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Issue metadata

Status: Duplicate
Merged: issue 758277
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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40.9% regression in smoothness.key_mobile_sites_smooth at 495229:495360

Project Member Reported by pmeenan@chromium.org, Aug 29 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 29 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760150

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1e70ded719a50dfa2105231abe0dd1873000f52063af8a1a1cc23f9fbb7c4cd8


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

android-nexus5X
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 29 2017

Mergedinto: 758277
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Charles Harrison
  Commit : 007abddf6ad7f7d3f1491217119e3e7166faaace
  Date   : Thu Aug 17 21:39:49 2017
  Subject: Testing config: doc.write blocking change on slow connections only

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : smoothness.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/http___worldjournal.com_
  Change       : 42.17% | 15.3073333333 -> 21.7621666667

Revision             Result                  N
chromium@495228      15.3073 +- 1.9378       6      good
chromium@495294      14.8953 +- 1.84062      6      good
chromium@495311      14.8327 +- 1.35233      6      good
chromium@495319      13.9655 +- 1.84018      6      good
chromium@495323      15.2827 +- 1.60166      6      good
chromium@495325      15.102 +- 2.28586       6      good
chromium@495326      14.851 +- 1.99065       6      good
chromium@495327      22.1792 +- 2.46475      6      bad       <--
chromium@495360      21.7622 +- 2.02606      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...worldjournal.com. smoothness.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969912521771404256


For feedback, file a bug with component Speed>Bisection

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