All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763274

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e0e24a780da0abc0b2d5425f1dd35642c55597de4f34620380081f10d2daa152


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

chromium-rel-mac-retina
chromium-rel-mac11-pro

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969038329666434288

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 2eb3c8ac7ffc6840dc07f5e8312576e107eece23
  Date   : Wed Sep 06 02:01:21 2017
  Subject: cc: Flush after every tile task set completes.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : v8-gc-scavenger_sum/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 85.53% | 57.0001666667 -> 105.755

Revision             Result                  N
chromium@499771      57.0002 +- 10.9355      6      good
chromium@499824      54.0422 +- 11.8767      6      good
chromium@499837      51.58 +- 3.21013        6      good
chromium@499844      56.6795 +- 10.9714      6      good
chromium@499845      105.249 +- 6.61467      6      bad       <--
chromium@499846      104.019 +- 8.09905      6      bad
chromium@499847      105.763 +- 6.98147      6      bad
chromium@499850      104.181 +- 7.34364      6      bad
chromium@499876      105.755 +- 3.15723      6      bad

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=browse.tech.discourse.infinite.scroll v8.runtimestats.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969038329666434288


For feedback, file a bug with component Speed>Bisection