All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=710019

Original alerts at time of bug-filing:
  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cm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3O3dvwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3Mv5qgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3PyAsQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3OXPpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3JbwuwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3NTooAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3LSuswkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnI75uAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3MHqqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3Mn4tAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3I3IvAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3LaaqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnM-U8wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnLGVwAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnO-DqwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3PmrsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnJvQuAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnJHsrgkM


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

android-nexus5X
android-nexus7v2
chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
win-high-dpi
win-zenbook

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982684307845467680

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982668651794099840

=== BISECT JOB RESULTS ===
Bisect was unable to run to completion

The bisect was able to narrow the range, you can try running with:
  good_revision: 10fc42a0f4dcdc878c3a6a54b575cd37536ebfe1
  bad_revision : c4dab7a401b27b39bfc8798751462fda6f20a7db

If failures persist contact the team (see below) and report the error.


Bisect Details
  Configuration: winx64_zen_perf_bisect
  Benchmark    : media.tough_video_cases
  Metric       : vm_working_set_delta_size/tulip2.m4a_total
  Change       : 1066.21% | -1302.0 -> 12580.0

Revision             Result                  N
chromium@461305      -1302.0 +- 3138.44      6      good
chromium@461307      -552.0 +- 4117.64       6      good
chromium@461309      12780.0 +- 2838.16      6      bad
chromium@461313      13317.3 +- 2116.08      6      bad
chromium@461321      12580.0 +- 3912.28      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests media.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982684307845467680

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5789801665527808


| 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!

Bisect has indicated that the culprit is Dale's crrev/461308. crrev/461309 is unrelated. Then I looked into the graphs, and it looks like things have recovered. Just FYI, Dale. 

Thanks, I did fix a followup case with that CL, so that possibly resolved the regressions.

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

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : media.tough_video_cases
  Metric       : time_to_play/video.html?src_crowd.wav_type_audio

Revision             Result                  N
chromium@461312      332.845 +- 2099.38      21      good
chromium@461322      255.125 +- 1579.58      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=video.html.src.crowd.wav.type.audio media.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982668651794099840

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5115362414166016


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982651961219567456

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

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : media.tough_video_cases
  Metric       : time_to_play/video.html?src_crowd.wav_type_audio

Revision             Result                  N
chromium@461312      288.459 +- 1784.44      21      good
chromium@461322      336.106 +- 2990.58      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=video.html.src.crowd.wav.type.audio media.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982651961219567456

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5115362414166016


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982584631542810624