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Issue 699189 link

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Issue metadata

Status: Duplicate
Merged: issue 699061
Owner:
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1183.8% regression in media.tough_video_cases at 454421:454537

Project Member Reported by tguilbert@chromium.org, Mar 7 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=699189

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglIu6pAkM


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

chromium-rel-mac12
Mergedinto: 699061
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : dalecurtis
  Commit : f4a6dbf44108f1855faf5a78d4fb06c349ebd70d
  Date   : Fri Mar 03 00:27:26 2017
  Subject: Replace FFmpegDemuxer thread per element with base::TaskScheduler.

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : media.tough_video_cases
  Metric       : idle_wakeups_renderer/video.html?src_smpte_3840x2160_60fps_vp9.webm
  Change       : 1062.93% | 43.1666666667 -> 502.0

Revision             Result                  N
chromium@454420      43.1667 +- 21.6526      6      good
chromium@454450      31.5 +- 42.2315         6      good
chromium@454451      37.0 +- 18.2757         6      good
chromium@454452      488.833 +- 49.2629      6      bad       <--
chromium@454454      513.5 +- 31.1689        6      bad
chromium@454458      483.5 +- 35.6581        6      bad
chromium@454465      495.833 +- 37.3742      6      bad
chromium@454479      504.5 +- 50.8871        6      bad
chromium@454537      502.0 +- 66.0908        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=video.html.src.smpte.3840x2160.60fps.vp9.webm media.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985756388103769552

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4942867182649344


| 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 Speed>Bisection.  Thank you!
Owner: dalecur...@chromium.org
Mergedinto: -699061 699202
Mergedinto: -699202 699061

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