All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776294

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f95ba97f2a7ae2be9f22b69195bd37d07275fee34fb3b92575cbfa2d0e2b1fcc


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

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

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965319956411830960

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

Suspected Commit
  Author : Jakob Gruber
  Commit : f7b09b3bdd96b4bd686b413c7a26e13f08ac4601
  Date   : Mon Oct 16 16:04:12 2017
  Subject: Reland "[snapshot] Ship lazy TFJ builtins"

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/load_chrome/load_chrome_blank
  Change       : 9.40% | 5578752.0 -> 6103040.0

Revision                           Result              N
chromium@509259                    5578752 +- 0.0      6      good
chromium@509299                    5578752 +- 0.0      6      good
chromium@509319                    5578752 +- 0.0      6      good
chromium@509324                    5578752 +- 0.0      6      good
chromium@509325                    5578752 +- 0.0      6      good
chromium@509325,v8@972d460f4f      5578752 +- 0.0      6      good
chromium@509325,v8@f7b09b3bdd      6103040 +- 0.0      6      bad       <--
chromium@509325,v8@efa038361d      6103040 +- 0.0      6      bad
chromium@509325,v8@6627b0aaf7      6103040 +- 0.0      6      bad
chromium@509326                    6103040 +- 0.0      6      bad
chromium@509327                    6103040 +- 0.0      6      bad
chromium@509329                    6103040 +- 0.0      6      bad
chromium@509338                    6103040 +- 0.0      6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

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=load.chrome.blank system_health.memory_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965319956411830960


For feedback, file a bug with component Speed>Bisection