All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759640

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=af8112ae3c7573dc8c4ab521d9768367dfe323b2cca901ad66c142e60e44e2af


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970001996862579440

=== 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_nexus5X_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_browser_cpu_time_per_frame/http___www.boingboing.net
  Change       : 5.93% | 3.39000144267 -> 3.59115044218

Revision             Result                    N
chromium@495228      3.39 +- 0.0855049         6      good
chromium@495294      3.38803 +- 0.130806       6      good
chromium@495311      3.40949 +- 0.0729536      6      good
chromium@495319      3.37874 +- 0.0776941      6      good
chromium@495323      3.3515 +- 0.148921        6      good
chromium@495325      3.36753 +- 0.124259       6      good
chromium@495326      3.37281 +- 0.109558       6      good
chromium@495327      3.56589 +- 0.103139       6      bad       <--
chromium@495360      3.59115 +- 0.0554643      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...www.boingboing.net thread_times.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/8970001996862579440


For feedback, file a bug with component Speed>Bisection