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Issue metadata

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



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3.3%-18.9% regression in speedometer at 496668:497085

Project Member Reported by tebbi@chromium.org, Aug 25 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 25 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758991

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=89ccd77c5130f5526a12a0b29375bc410f90a67cbfd1259488c7c0b377beb6fa


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

android-nexus6
android-nexus7v2
android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 26 2017


=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : Total:duration_avg/browse_chrome/browse_chrome_omnibox
  Change       : 6.70% | 5191.42442857 -> 5539.254

Suspected Commit Range
  4 commits in range
  https://chromium.googlesource.com/chromium/src/+log/a2f85c6c20ec92afe39a3a2797a643fbeba3aed2..7662ff8cb53121cd4d8916007d430b36efd45895


Revision             Result                  N
chromium@496667      5191.42 +- 4344.46      21       good
chromium@496809      5328.01 +- 4803.24      21       good
chromium@496844      5083.82 +- 3131.09      14       good
chromium@496863      5243.35 +- 4412.71      21       good
chromium@496871      5435.55 +- 4181.15      14       good
chromium@496874      5479.94 +- 5104.03      21       good
chromium@496875      ---                     ---      build failure
chromium@496876      ---                     ---      build failure
chromium@496877      ---                     ---      build failure
chromium@496878      5618.5 +- 4182.02       21       bad
chromium@496880      5217.29 +- 306.441      14       bad
chromium@496950      5539.25 +- 3097.84      14       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.chrome.omnibox v8.runtimestats.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970283337441580752


For feedback, file a bug with component Speed>Bisection

Comment 4 by tebbi@chromium.org, Aug 29 2017

Status: WontFix (was: Assigned)
seems to be a bot issue

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