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Issue 679527 link

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Issue metadata

Status: Duplicate
Owner: ----
Closed: Jan 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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9.4% regression in tab_switching.tough_image_cases at 441109:441140

Project Member Reported by benhenry@google.com, Jan 9 2017

Issue description

Links below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=679527

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDggLihrgsM


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

chromium-rel-mac11-air
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 10 2017

Mergedinto: 678286
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : altimin
  Commit : 124814c8025c564a6f494a3c9d4c887d57b98f1e
  Date   : Tue Jan 03 14:09:53 2017
  Subject: Use timer task runner for V8PerIsolate tasks

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : tab_switching.tough_image_cases
  Metric       : idle_wakeups_total/idle_wakeups_total
  Change       : 8.74% | 225.0 -> 244.666666667

Revision             Result                  N
chromium@441108      225.0 +- 10.0           6      good
chromium@441112      206.833 +- 105.484      6      good
chromium@441113      225.0 +- 19.1833        6      good
chromium@441114      243.833 +- 16.9951      6      bad       <--
chromium@441116      240.333 +- 8.44591      6      bad
chromium@441124      244.5 +- 10.3682        6      bad
chromium@441140      244.667 +- 4.6188       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 tab_switching.tough_image_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990901108814068064

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5901164270321664


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!

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