All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=752527

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=29d6ff5eb063b6c059b1cc356c3b353d95dafbfaaac6ff0596a0683ced85f04c


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

chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972178097372263424

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/load_games/load_games_alphabetty
  Change       : 3.02% | 9097216.0 -> 8822588.95238

Suspected Commit Range
  2 commits in range
  https://chromium.googlesource.com/chromium/src/+log/a34f8c0dd8413ae7f970d13267a09fe69e4819f0..6b8fafc58277a007a25257b4f763ad71fa89f06c


Revision             Result                  N
chromium@489864      9097216 +- 0.0          21       good
chromium@489884      9097216 +- 0.0          14       good
chromium@489894      9097216 +- 0.0          14       good
chromium@489897      9059767 +- 505217       14       good
chromium@489898      ---                     ---      build failure
chromium@489899      8722725 +- 886208       14       bad
chromium@489904      8822589 +- 1199932      21       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.alphabetty 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/8972178097372263424


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971270355483057968

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/load_games/load_games_alphabetty
  Change       : 4.80% | 9097216.0 -> 8797622.85714

Suspected Commit Range
  2 commits in range
  https://chromium.googlesource.com/chromium/src/+log/a34f8c0dd8413ae7f970d13267a09fe69e4819f0..6b8fafc58277a007a25257b4f763ad71fa89f06c


Revision             Result                  N
chromium@489864      9097216 +- 0.0          9        good
chromium@489884      9097216 +- 0.0          9        good
chromium@489894      9097216 +- 0.0          14       good
chromium@489897      9059767 +- 505217       14       good
chromium@489898      ---                     ---      build failure
chromium@489899      8772657 +- 1166748      21       bad
chromium@489904      8797623 +- 970793       14       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.alphabetty 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/8971270355483057968


For feedback, file a bug with component Speed>Bisection

Suspecting parallel scavenge. :)

Thanks for checking. Closing because that is a trade off.