All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766528

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3e752890ff271419637885d0afdb24ee457ea4732acfb3afe0c05a1f772e72dd


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

chromium-rel-mac11
chromium-rel-win7-x64-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968031134718728848

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

Suspected Commit
  Author : Jaroslav Sevcik
  Commit : 14b424c3088d4e451eecd94320faf52355faaad1
  Date   : Wed Sep 13 12:32:50 2017
  Subject: [turbofan] Lower monomorphic loads during graph building.

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : kraken
  Metric       : Total/Total
  Change       : 2.22% | 1283.28333333 -> 1311.78333333

Revision                           Result                  N
chromium@501641                    1283.28 +- 5.7592       6      good
chromium@501648                    1284.77 +- 11.3962      6      good
chromium@501651                    1282.28 +- 7.98801      6      good
chromium@501653                    1283.2 +- 12.8981       6      good
chromium@501653,v8@bc69f3450b      1278.37 +- 9.00518      6      good
chromium@501653,v8@14b424c308      1310.47 +- 12.4937      6      bad       <--
chromium@501654                    1306.92 +- 3.78792      6      bad
chromium@501666                    1314.9 +- 8.19146       6      bad
chromium@501691                    1313.1 +- 3.37935       6      bad
chromium@501740                    1311.78 +- 7.46112      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 kraken

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968031134718728848


For feedback, file a bug with component Speed>Bisection