All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763914

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d7a4eabbacae8677f2cde51a81ec3c90d915f1a7c403cc0266d9d7b17f1df5d7


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

chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968743390945303056

=== Auto-CCing suspected CL author jgruber@chromium.org ===

Hi jgruber@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : jgruber
  Commit : 70a516387a159a82f4b7dd6277ad26ee7e022519
  Date   : Wed Aug 30 09:46:40 2017
  Subject: Reland "[snapshot] Move builtins to dedicated snapshot area"

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : v8-gc-incremental-step_max/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 79.99% | 1.51666666667 -> 2.72983333333

Revision                           Result                   N
chromium@499206                    1.51667 +- 0.279087      6      good
chromium@499247                    1.4155 +- 0.167647       6      good
chromium@499258                    1.44883 +- 0.144689      6      good
chromium@499263                    1.4575 +- 0.172295       6      good
chromium@499265                    1.50283 +- 0.189206      6      good
chromium@499265,v8@ece1e2d149      1.44367 +- 0.18811       6      good
chromium@499265,v8@68eabceb15      1.62217 +- 0.72463       6      good
chromium@499265,v8@70a516387a      2.74767 +- 0.44086       6      bad       <--
chromium@499265,v8@36ef81b6ea      2.67233 +- 0.622923      6      bad
chromium@499265,v8@9619b7f23c      2.72933 +- 0.41462       6      bad
chromium@499265,v8@d138f8d7ef      2.83167 +- 0.671578      6      bad
chromium@499266                    2.81167 +- 0.456718      6      bad
chromium@499268                    2.74983 +- 0.775346      6      bad
chromium@499288                    2.72983 +- 0.506933      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.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968743390945303056


For feedback, file a bug with component Speed>Bisection