All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758856

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8bee079abd03d6ea0c42c4971972437f33c34c2620b98e2ef5f748643812090e


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

chromium-rel-mac11-pro

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970304168116261152

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

Suspected Commit
  Author : Michael Hablich
  Commit : af91eb85de58d9205f029da39662740ca7c222f2
  Date   : Wed Aug 23 10:18:57 2017
  Subject: Version 6.2.337.1 (cherry-pick)

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : oortonline_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/http___oortonline.gl__run
  Change       : 19.95% | 328117782.667 -> 393592015.333

Revision                           Result                     N
chromium@496123                    328117783 +- 6632000       6      good
chromium@496416                    325210289 +- 5013874       6      good
chromium@496563                    331651383 +- 14655215      6      good
chromium@496636                    327112755 +- 5724498       6      good
chromium@496655                    328575141 +- 16148753      6      good
chromium@496660                    328615699 +- 12140569      6      good
chromium@496661                    326117621 +- 3376066       6      good
chromium@496661,v8@af91eb85de      392963590 +- 5591482       6      bad       <--
chromium@496662                    393246933 +- 3225079       6      bad
chromium@496664                    393657481 +- 2703425       6      bad
chromium@496673                    392855143 +- 2745172       6      bad
chromium@496709                    393592015 +- 2444537       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=http...oortonline.gl..run oortonline_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970304168116261152


For feedback, file a bug with component Speed>Bisection