All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=749433

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7f417b6d8d4041fee9d081a2f2e976a2c63f69467005677fc0e78e21b14b2abd


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

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972932547276644400

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

Suspected Commit
  Author : Ken Rockot
  Commit : 474df01407e5d38c85364ae4d1709b8d9af16f16
  Date   : Wed Jul 12 13:28:56 2017
  Subject: Mojo C++ Bindings: Lazy Serialization

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : service_worker.service_worker_micro_benchmark
  Metric       : concurrent_10_response_90_percentile/concurrent_10_response_90_percentile
  Change       : 2.40% | 8.44722222222 -> 8.65

Revision             Result                   N
chromium@485931      8.44722 +- 0.854989      9       good
chromium@485933      8.48321 +- 0.48268       14      good
chromium@485934      8.425 +- 0.135462        6       good
chromium@485935      8.68571 +- 0.533988      14      bad       <--
chromium@485938      8.83 +- 0.957001         9       bad
chromium@485945      8.73222 +- 0.241051      9       bad
chromium@485959      8.74278 +- 0.655329      9       bad
chromium@485987      8.72222 +- 0.182498      9       bad
chromium@486042      8.65 +- 0.30545          9       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 service_worker.service_worker_micro_benchmark

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972932547276644400


For feedback, file a bug with component Speed>Bisection