All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759730

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7770cdc6e59e742b489e39d9f6701fee613e589821480b9f7ce4d06be4f8a8e7


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969998158440299120

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

Suspected Commit
  Author : Charles Harrison
  Commit : 007abddf6ad7f7d3f1491217119e3e7166faaace
  Date   : Thu Aug 17 21:39:49 2017
  Subject: Testing config: doc.write blocking change on slow connections only

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : frame_times/http___worldjournal.com_
  Change       : 25.22% | 18.12782545 -> 22.7003617404

Revision             Result                   N
chromium@494757      18.1278 +- 1.06648       6      good
chromium@495056      18.2201 +- 0.662865      6      good
chromium@495206      17.863 +- 0.926643       6      good
chromium@495280      18.0453 +- 0.350786      6      good
chromium@495317      17.7656 +- 0.978279      6      good
chromium@495322      18.3869 +- 0.892152      6      good
chromium@495325      17.9314 +- 1.29276       6      good
chromium@495326      18.1947 +- 1.18532       6      good
chromium@495327      22.8965 +- 2.39847       6      bad       <--
chromium@495336      22.525 +- 1.94796        6      bad
chromium@495354      22.7004 +- 0.931941      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...worldjournal.com. smoothness.sync_scroll.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969998158440299120


For feedback, file a bug with component Speed>Bisection