All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=775288

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b81b4d7f1a3e5d329a62ebda25137381bd3518edb2da6a825e190fe78fefddf4


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

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965532868131493056

=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media_perftests
  Metric       : audio_converter/convert_pass_through


To Run This Test
  ./src/out/Release/media_perftests --single-process-tests

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965532868131493056


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965466146587599216

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

Suspected Commit
  Author : Hans Wennborg
  Commit : 8316001e3f423f6ca2e7a9a7258c22944d16ae13
  Date   : Fri Oct 13 20:32:51 2017
  Subject: Roll Clang 313786:315613

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media_perftests
  Metric       : audio_converter/convert_pass_through
  Change       : 7.24% | 1870444.9369 -> 1735034.51692

Revision             Result                  N
chromium@508763      1870445 +- 86372.5      6      good
chromium@508794      1888294 +- 72025.2      6      good
chromium@508802      1891021 +- 56618.6      6      good
chromium@508803      1898283 +- 36877.2      6      good
chromium@508804      1756038 +- 42025.3      6      bad       <--
chromium@508806      1752477 +- 16495.4      6      bad
chromium@508810      1745139 +- 51428.5      6      bad
chromium@508825      1741094 +- 72626.3      6      bad
chromium@508887      1735035 +- 102417       6      bad

To Run This Test
  ./src/out/Release/media_perftests --single-process-tests

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965466146587599216


For feedback, file a bug with component Speed>Bisection