All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759599

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a0e5756056cc87ecc8ae73ac69042fdd903522d7a5a5695bf5908c34f5a9b01e


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

chromium-rel-win7-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970006398611272288

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

Suspected Commit
  Author : Nico Weber
  Commit : 7cd2f6bd73c6a9c6200704e995b18ebb3168ead6
  Date   : Sat Aug 19 04:23:54 2017
  Subject: win: Turn off clang-by-default again for now.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.tough_filters_cases
  Metric       : frame_times/Filter Terrain SVG
  Change       : 3.73% | 35.839862952 -> 37.1770040486

Revision             Result                   N
chromium@495791      35.8399 +- 1.11035       6      good
chromium@495800      35.936 +- 0.946737       6      good
chromium@495801      36.2003 +- 0.420004      6      good
chromium@495802      37.5765 +- 0.771329      6      bad       <--
chromium@495804      37.5138 +- 1.13845       6      bad
chromium@495808      37.177 +- 1.14664        6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Filter.Terrain.SVG smoothness.gpu_rasterization.tough_filters_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970006398611272288


For feedback, file a bug with component Speed>Bisection