All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=756110

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ba3d8077083157aae1ac8726c9324e620b8588fbe51681b44585fbdfe5de12cb


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

android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971080990203943472

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

Suspected Commit
  Author : Xida Chen
  Commit : ea20f077cb3981dce10270048decfab2a33e9fcd
  Date   : Thu Aug 10 22:21:06 2017
  Subject: Enable Waterfall testing for reduced soft tile memory experiment

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_renderer_compositor_cpu_time_per_frame/http___slashdot.org_
  Change       : 12.04% | 3.41164644155 -> 3.82224762678

Revision             Result                    N
chromium@493555      3.41165 +- 0.0335434      6      good
chromium@493557      3.41239 +- 0.0557287      6      good
chromium@493558      3.81864 +- 0.101099       6      bad       <--
chromium@493559      3.80597 +- 0.112432       6      bad
chromium@493563      3.83126 +- 0.120728       6      bad
chromium@493571      3.82457 +- 0.0778523      6      bad
chromium@493586      3.82213 +- 0.148815       6      bad
chromium@493616      3.83458 +- 0.0827977      6      bad
chromium@493676      3.82225 +- 0.0691274      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...slashdot.org. 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/8971080990203943472


For feedback, file a bug with component Speed>Bisection