All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=750759

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3cff86c96e545e9b3fa50ede85a7c87d1a64c9c47b628b185a477eae2f10133f


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-win10
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972530938158799904

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

Suspected Commit
  Author : Michael Hablich
  Commit : 9bac201e0e32f198064a10c3032dbd839e8e8efd
  Date   : Thu Jul 27 07:10:02 2017
  Subject: Version 6.2.52.1 (cherry-pick)

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : v8-gc-incremental-start_sum/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 116.43% | 0.517333333333 -> 1.11966666667

Revision                           Result                    N
chromium@489895                    0.517333 +- 0.388653      6      good
chromium@489897                    0.417 +- 0.40251          6      good
chromium@489897,v8@9bac201e0e      2.3534 +- 2.45213         5      bad       <--
chromium@489898                    1.51483 +- 1.60232        6      bad
chromium@489900                    1.22689 +- 1.32675        9      bad
chromium@489904                    1.39567 +- 1.44632        6      bad
chromium@489913                    1.51817 +- 0.994501       6      bad
chromium@489930                    1.33183 +- 1.03154        6      bad
chromium@489964                    1.11967 +- 0.789503       6      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.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/8972530938158799904


For feedback, file a bug with component Speed>Bisection