All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=781819

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8e91bbec3aeef7054785365c5c6aac66e973a976015dbfa8f7204fc0bc472d8d


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

android-nexus5
android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963658744059159216

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_other_cpu_time_per_frame/http___cuteoverload.com
  Change       : 212.12% | 0.0844496777173 -> 0.263584752232

Suspected Commit Range
  3 commits in range
  https://chromium.googlesource.com/v8/v8.git/+log/a274fc653686179346e8a3002e63c5db5b71a033..586067e45dd542a117b67ad66d3b14475d8d571f


Revision                           Result                      N
chromium@513499                    0.0844497 +- 0.167851       6        good
chromium@513676                    0.070671 +- 0.033526        6        good
chromium@513699                    0.0829103 +- 0.043477       6        good
chromium@513710                    0.0777868 +- 0.0569088      6        good
chromium@513716                    0.0618471 +- 0.0426479      6        good
chromium@513719                    0.073601 +- 0.0598291       6        good
chromium@513719,v8@a274fc6536      0.0684709 +- 0.0544536      6        good
chromium@513719,v8@fd35526f36      ---                         ---      build failure
chromium@513719,v8@694a18781c      ---                         ---      build failure
chromium@513719,v8@586067e45d      0.255772 +- 0.0548692       6        bad
chromium@513720                    0.250684 +- 0.0173629       6        bad
chromium@513721                    0.267578 +- 0.046015        6        bad
chromium@513765                    0.257587 +- 0.0447848       6        bad
chromium@513853                    0.263585 +- 0.063502        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...cuteoverload.com 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/8963658744059159216


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963550691834229344

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

Suspected Commit
  Author : Matthew Jones
  Commit : 95f29fcd6f90903cbfbd71bbe6205d75cd55e915
  Date   : Fri Nov 03 14:52:51 2017
  Subject: Remove throttled-progress updates flag

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_browser_cpu_time_per_frame/http___cuteoverload.com
  Change       : 29.25% | 3.92224725321 -> 5.06945019656

Revision             Result                    N
chromium@513499      3.92225 +- 0.0345623      6      good
chromium@513676      3.9268 +- 0.0635926       6      good
chromium@513765      3.90285 +- 0.062737       6      good
chromium@513768      3.8904 +- 0.043884        6      good
chromium@513769      3.90199 +- 0.0538348      6      good
chromium@513770      5.09406 +- 0.14854        6      bad       <--
chromium@513771      5.05838 +- 0.227113       6      bad
chromium@513776      5.06253 +- 0.117232       6      bad
chromium@513787      5.06486 +- 0.0993676      6      bad
chromium@513809      5.06027 +- 0.150807       6      bad
chromium@513853      5.06945 +- 0.113528       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...cuteoverload.com 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/8963550691834229344


For feedback, file a bug with component Speed>Bisection