All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755648

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=17624f7b1854cb4ecb857ad521cf6dfe8c3eecbb6fdcfccf460be960a028ae5b


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

android-nexus5X
chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971169751729405152

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

Suspected Commit
  Author : Khushal
  Commit : 1b8abc019a5b476d503bff7405120c44036799eb
  Date   : Thu Aug 10 05:16:17 2017
  Subject: cc/blink: Replace SkImageGenerator with PaintImageGenerator.

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:all_processes:reported_by_chrome:skia:effective_size_avg/load_games/load_games_bubbles
  Change       : 639.39% | 18339559.3333 -> 135601016.0

Revision             Result                    N
chromium@493190      18339559 +- 3.65148       6      good
chromium@493225      18339560 +- 0.0           6      good
chromium@493243      18339560 +- 0.0           6      good
chromium@493248      18339560 +- 0.0           6      good
chromium@493250      18339560 +- 0.0           6      good
chromium@493251      133071016 +- 4177489      6      bad       <--
chromium@493252      132565016 +- 4441285      6      bad
chromium@493260      132766899 +- 6037361      6      bad
chromium@493330      135601016 +- 3718325      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.games.bubbles 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/8971169751729405152


For feedback, file a bug with component Speed>Bisection