All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=781150

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=32a190e6b62b547c4a28f33356f5ad7ab6dffdc04e8def49d77a74a0600cf3bf


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

chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963957392733158272

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

Suspected Commit
  Author : Zhenyao Mo
  Commit : 77604d4d295b16c91b935c0a3e035a574532a497
  Date   : Mon Oct 30 03:22:48 2017
  Subject: Call UpdateGPUInfo and UpdateGpuFeatureInfo always on GPU process launch.

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : v8.browsing_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/browse_search/browse_search_google_india
  Change       : 13.05% | 14730103.5851 -> 16653094.7879

Revision             Result                   N
chromium@512425      14730104 +- 778179       6      good
chromium@512430      14692352 +- 902886       6      good
chromium@512433      15161403 +- 980813       6      good
chromium@512434      14812825 +- 350409       6      good
chromium@512435      16412506 +- 574405       6      bad       <--
chromium@512445      16653095 +- 1110479      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.search.google.india v8.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963957392733158272


For feedback, file a bug with component Speed>Bisection