All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=777286

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=23d8d809c5a649bcc74b3986275ee8347e215ef2d722612a000f5f3e1b45e9cc


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/168a9477780000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/168a9477780000

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964953726959668592

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/148ba49f780000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/128861c0f80000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/128861c0f80000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/148ba49f780000

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

Please try rerunning the bisect.


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


Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/play_media/play_media_soundcloud

Revision                           Result                  N
chromium@509321                    23861573 +- 271130      6       good
chromium@509325                    24014112 +- 299264      9       good
chromium@509325,v8@efa038361d      24260207 +- 177022      6       bad
chromium@509325,v8@6627b0aaf7      24358207 +- 263873      6       bad
chromium@509326                    24189791 +- 392604      14      bad
chromium@509327                    24308141 +- 517565      9       bad
chromium@509329                    24251736 +- 238547      6       bad
chromium@509336                    24187060 +- 210722      6       bad
chromium@509350                    24301853 +- 244953      6       bad
chromium@509379                    24204381 +- 456854      6       bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

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=play.media.soundcloud system_health.memory_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964953726959668592


For feedback, file a bug with component Speed>Bisection