All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=729006

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgur_dywgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghuDT8AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-snz9AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgur_4rQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-qOI5QkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-sC0sgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-uW4qQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-tyYoQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-t2-rQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-vnO6woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguoG0gAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguu-cqQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgup2xiwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-uixtgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupaisQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-tL09QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-tbV8AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgutei-woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-vDHtQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-srkvgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguuHIqAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguubMqwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurCM-AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-sySvAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-rmosAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguqungwgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-sa85QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguo_3uQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-rC6ugsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2v32zAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurm65goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgusqS8gsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupmRkAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurel5QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguv2XvgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-sjCrgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgup2t6ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgus2a1QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguqG5vgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-oq8sgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguo-g9goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-rLxrgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurS69ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-oaglggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-rTc-QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgus-8tQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurrA4wkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvXs7AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguv6W6ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguuH1rAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-ub1pAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguv6WqgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurDP4woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvugqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgur3rowkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurrj9ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgusuhrwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-oag5gsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-qi0pQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-vL3vAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurelpQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguuvztwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-uTg7goM


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

chromium-rel-mac11-air
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977894170853987360

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

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


Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : Optimize:duration_avg/browse_media/browse_media_youtube


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 --story-filter=browse.media.youtube v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977894170853987360

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6432864188497920


| 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/8977800838926497488

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

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


Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop_classic
  Metric       : Optimize:duration_avg/browse_media/browse_media_youtube


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 --story-filter=browse.media.youtube v8.runtimestats.browsing_desktop_classic

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977800838926497488

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6432864188497920


| 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!

Not sure if this is worth an investigation, the CL range is quite large, it's unclear if this regression is something universal, and there seems to have been a partial recovery. Assigning to Toon to give a second opinion and then close if he sees fit.

I agree that closing it makes sense.