All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=779476

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=161e68d57d757274fe71781063dee72f7d883851750c5032579f8d4de143352b


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

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
linux-release
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964327729945243200

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

Suspected Commit
  Author : Alex Moshchuk
  Commit : 9cf0ac139cc65890b9e036f704040c8da332d6e3
  Date   : Wed Oct 25 21:26:19 2017
  Subject: Add field trial testing config for sign-in process isolation.

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:allocated_objects_size_avg/load_media/load_media_dailymotion
  Change       : 9.71% | 22322652.0 -> 24490610.6667

Revision             Result                   N
chromium@511480      22322652 +- 1531825      6      good
chromium@511551      21845372 +- 628932       6      good
chromium@511586      22052563 +- 548809       6      good
chromium@511591      22093096 +- 2088096      9      good
chromium@511593      21919057 +- 710501       6      good
chromium@511594      24132880 +- 386408       6      bad       <--
chromium@511595      24099753 +- 593702       6      bad
chromium@511604      24027451 +- 720377       6      bad
chromium@511621      24490611 +- 2612160      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=load.media.dailymotion 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/8964327729945243200


For feedback, file a bug with component Speed>Bisection