All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787397

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f430e709eba124e4cc5f4a776b414fcd43418b88b4ea69cf49fe632d289a643c


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

android-nexus5
android-nexus7v2
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
linux-release
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962316744076126688

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

Suspected Commit
  Author : Michael Starzinger
  Commit : 23883b85f21a2c61515cb57064b19901ae666884
  Date   : Thu Nov 09 09:31:15 2017
  Subject: [deoptimizer] Turn deopt entries into immovable Code objects.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:large_object_space:allocated_objects_size_avg/browse_news/browse_news_reddit

Revision                           Result                 N
chromium@515947                    0.0 +- 0.0             6      good
chromium@515950                    21184.2 +- 116030      6      good
chromium@515951                    0.0 +- 0.0             6      good
chromium@515951,v8@1ea3fd2e13      48373.7 +- 264953      6      good
chromium@515951,v8@6aa3349afb      23302.6 +- 127633      6      good
chromium@515951,v8@a9c908eb40      0.0 +- 0.0             6      good
chromium@515951,v8@23883b85f2      498479 +- 156841       6      bad       <--
chromium@515951,v8@b9c9932202      466341 +- 692.098      6      bad
chromium@515951,v8@d1193e3c6c      471090 +- 10081.2      6      bad
chromium@515951,v8@2328e4d196      472314 +- 9550.54      6      bad
chromium@515952                    483208 +- 92416.7      6      bad
chromium@515953                    475577 +- 531.383      6      bad
chromium@515958                    493502 +- 137764       6      bad
chromium@515968                    463239 +- 18593.3      6      bad
chromium@515989                    465929 +- 23607.7      6      bad
chromium@516030                    466422 +- 13420.3      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=browse.news.reddit v8.runtimestats.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962316744076126688


For feedback, file a bug with component Speed>Bisection