All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=747531

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8a439bc069ff97654a55f805c5b9bf87faf5ec48ecfb3e651959187b050305c6


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

chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973432795291310848

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

Suspected Commit
  Author : Ross McIlroy
  Commit : 3e19d72377f985545fc4966dcfad76442280d68f
  Date   : Tue Jul 18 09:43:19 2017
  Subject: [Compiler] Move creation of SharedFunctionInfo later in compile.

Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:peak_size_avg/video.html?src_garden2_10s.webm_seek
  Change       : 2.82% | 290372.0 -> 298564.0

Revision                           Result             N
chromium@487404                    290372 +- 0.0      6      good
chromium@487434                    290372 +- 0.0      6      good
chromium@487449                    290372 +- 0.0      6      good
chromium@487451                    290372 +- 0.0      6      good
chromium@487452                    290372 +- 0.0      6      good
chromium@487452,v8@2b5a36d571      290372 +- 0.0      6      good
chromium@487452,v8@3e19d72377      298564 +- 0.0      6      bad       <--
chromium@487452,v8@b56b94bebc      298564 +- 0.0      6      bad
chromium@487453                    298564 +- 0.0      6      bad
chromium@487456                    298564 +- 0.0      6      bad
chromium@487463                    298564 +- 0.0      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=video.html.src.garden2.10s.webm.seek media.tough_video_cases_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973432795291310848


For feedback, file a bug with component Speed>Bisection