All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=752088

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2321704ff1af664a3a506f11b920f740a423e8fa8a557ee35fe3b753ad79929e


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

chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972278280855369184

=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : total:500ms_window:renderer_eqt:v8:gc:memory-mark-compactor_max/total:500ms_window:renderer_eqt:v8:gc:memory-mark-compactor_max


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests v8.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972278280855369184


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970554458735864240

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970554442508756784

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: winx64ati_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : v8-gc-incremental-step_avg/browse_social/browse_social_facebook_infinite_scroll

Revision             Result                     N
chromium@489793      0.378813 +- 0.120338       21      good
chromium@489889      0.375224 +- 0.0900934      21      bad

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=browse.social.facebook.infinite.scroll v8.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970554442508756784


For feedback, file a bug with component Speed>Bisection

=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : total:500ms_window:renderer_eqt:v8:gc:memory-mark-compactor_max/total:500ms_window:renderer_eqt:v8:gc:memory-mark-compactor_max


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests v8.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970554458735864240


For feedback, file a bug with component Speed>Bisection

not reproducible