All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755312

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=54b2d0fbe888d1b6818c50f7a20b4854a38f6a1b71c8e7eb8846e2492b220968


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

android-nexus5X
android-webview-nexus6
chromium-rel-win10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971251792261620304

=== 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: winx64_10_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/multitab_misc/multitab_misc_typical24
  Change       : 134.63% | 170551588.0 -> 400157438.667

Revision             Result                      N
chromium@493198      170551588 +- 23065047       6      good
chromium@493236      171595917 +- 18013795       6      good
chromium@493245      170404020 +- 28422407       6      good
chromium@493249      171344667 +- 20532619       6      good
chromium@493250      164833851 +- 11144072       6      good
chromium@493251      431848115 +- 132985485      6      bad       <--
chromium@493252      351309970 +- 200445922      6      bad
chromium@493254      422093699 +- 209185019      6      bad
chromium@493275      441545544 +- 171419451      6      bad
chromium@493351      400157439 +- 137744620      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_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=multitab.misc.typical24 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/8971251792261620304


For feedback, file a bug with component Speed>Bisection