All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=748449

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9d257029ec6d966833c90a6a7baed9fee055605e41ed724fbf6e914aeabec32e


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

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973105134712941488

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

Suspected Commit
  Author : Ulan Degenbaev
  Commit : 176a2b24fb23a0c9a3bc9eec27f6445dbfa5ab27
  Date   : Wed Jul 19 13:04:47 2017
  Subject: [heap] Reland "[heap] Allow a minimum semi-space size of 512K."

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/load_search/load_search_ebay
  Change       : 7.02% | 3640713.33333 -> 3896890.0

Revision                           Result                  N
chromium@488719                    3640713 +- 84027.5      9       good
chromium@488736                    3645326 +- 72825.1      9       good
chromium@488745                    3636225 +- 94713.0      14      good
chromium@488745,v8@ae9a2d38f3      3635572 +- 97521.9      14      good
chromium@488745,v8@91c1a81d0e      3629927 +- 114972       14      good
chromium@488745,v8@bb29f9a4d6      3640154 +- 89301.3      14      good
chromium@488745,v8@176a2b24fb      3882788 +- 431982       14      bad       <--
chromium@488745,v8@7cfd0c249e      3857103 +- 503506       14      bad
chromium@488745,v8@fb98b0c225      3839673 +- 663699       21      bad
chromium@488746                    3905235 +- 60992.7      14      bad
chromium@488747                    3896866 +- 213.523      6       bad
chromium@488749                    3862524 +- 290598       9       bad
chromium@488753                    3862670 +- 287059       9       bad
chromium@488787                    3896890 +- 267.058      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.search.ebay 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/8973105134712941488


For feedback, file a bug with component Speed>Bisection