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Issue 759028 link

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Issue metadata

Status: Duplicate
Merged: issue 756145
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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37.6% regression in loading.desktop at 494402:494658

Project Member Reported by kraynov@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=759028

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e787d0850c7c0363c9cdd0651dd401de5e0d28078f4fac1c7f422a7f7c73ccb8


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

chromium-rel-mac-retina
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 25 2017


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/Haraj

Revision             Result                  N
chromium@494401      268.508 +- 195.643      21      good
chromium@494658      281.499 +- 317.083      21      bad

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

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970275567508029952


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

Comment 5 by 42576172...@developer.gserviceaccount.com, Aug 26 2017

Mergedinto: 756145
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Greg Kerr
  Commit : 9705b7aaabf4c81d4e9cb13174338df9bde61cc4
  Date   : Tue Aug 15 19:42:42 2017
  Subject: Enable Finch Trial Test for MacV2Sandbox.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/FDA
  Change       : 21.48% | 243.4475 -> 295.751166667

Revision             Result                  N
chromium@494342      243.447 +- 6.6008       6      good
chromium@494457      242.141 +- 9.15241      6      good
chromium@494486      245.444 +- 5.65843      6      good
chromium@494501      245.238 +- 3.85118      6      good
chromium@494502      275.726 +- 7.67195      6      bad       <--
chromium@494503      277.042 +- 6.79304      6      bad
chromium@494505      275.844 +- 6.11223      6      bad
chromium@494508      275.807 +- 11.7944      6      bad
chromium@494515      276.369 +- 14.5103      6      bad
chromium@494572      276.49 +- 11.1778       6      bad
chromium@494802      274.712 +- 5.88321      6      bad
chromium@495262      295.751 +- 2.98417      6      bad

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

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970254150568776736


For feedback, file a bug with component Speed>Bisection

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