All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759729

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7e6a804855dc3389c8ee6a5fa5b5a4cbc79795c6a7be72e35aceb1db3ccefd23


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969998172027302928

=== 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_nexus5_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : first_gesture_scroll_update_latency/http___worldjournal.com_
  Change       : 238.31% | 37.5273333333 -> 126.957

Revision             Result                  N
chromium@495292      37.5273 +- 32.5439      6      good
chromium@495312      39.7575 +- 53.3294      6      good
chromium@495322      35.6988 +- 37.6703      6      good
chromium@495325      39.1312 +- 23.852       6      good
chromium@495326      35.2923 +- 22.0373      6      good
chromium@495327      118.901 +- 53.3605      6      bad       <--
chromium@495331      123.784 +- 45.7738      6      bad
chromium@495369      126.957 +- 103.54       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/8969998172027302928


For feedback, file a bug with component Speed>Bisection