All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=752878

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3d1608f7c843117a6142237a14015489803f3524d99c12ccfe69ebe51607ae56


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971931878568558720

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

Suspected Commit
  Author : Ulan Degenbaev
  Commit : 774a4c5e240569b551cc9d19ae8cac146891d4c4
  Date   : Fri Jul 28 19:42:31 2017
  Subject: Revert "[heap] Reland "[heap] Allow a minimum semi-space size of 512K.""

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/load_news/load_news_qq
  Change       : 6.22% | 2926304.66667 -> 3108180.0

Revision                           Result                  N
chromium@490643                    2926305 +- 15498.3      6       good
chromium@490649                    2943112 +- 87078.0      9       good
chromium@490652                    2956552 +- 120441       14      good
chromium@490652,v8@59ddd6061c      2960762 +- 60737.0      6       good
chromium@490652,v8@e567dd3ab4      2960877 +- 72419.4      6       good
chromium@490652,v8@774a4c5e24      3102947 +- 168857       6       bad       <--
chromium@490652,v8@4a9718c777      3089526 +- 312240       14      bad
chromium@490653                    3082382 +- 235854       9       bad
chromium@490654                    3123021 +- 352880       9       bad
chromium@490665                    3018975 +- 152471       6       bad
chromium@490686                    3070331 +- 199529       6       bad
chromium@490729                    3108180 +- 346670       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=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.news.qq system_health.memory_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971931878568558720


For feedback, file a bug with component Speed>Bisection