All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760136

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=88e0dca0a036c18f0f18d937ff07c1d58da1920aa855fe322da4d195c455af4f


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

chromium-rel-mac11-air
chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969913112343449856

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

Suspected Commit
  Author : perezju
  Commit : 122dd5e91bf64888049459ce73a8fd34c084cfe0
  Date   : Mon Aug 14 12:28:51 2017
  Subject: [Telemetry] Reuse shared state between story runs

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : blink_perf.svg
  Metric       : DropsOnABlade/DropsOnABlade
  Change       : 5.53% | 12.7016666667 -> 13.6082142857

Revision                                 Result                   N
chromium@494020                          12.7017 +- 0.657156      9       good
chromium@494034                          12.6848 +- 0.669072      9       good
chromium@494041                          12.8533 +- 0.771714      9       good
chromium@494044                          12.5803 +- 0.322446      6       good
chromium@494046                          13.2436 +- 2.47262       14      good
chromium@494046,catapult@122dd5e91b      14.0446 +- 3.51667       21      bad       <--
chromium@494047                          13.6082 +- 1.69012       14      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 blink_perf.svg

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969913112343449856


For feedback, file a bug with component Speed>Bisection