All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783688

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b33d2b87eec6657ac06cd9d044a1f67681103082137f870738a1823b4c61846f


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

chromium-rel-win10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963319639474678592

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

Suspected Commit
  Author : Nate Chapin
  Commit : 1aec1a92fb786cae0a24ff2b22d4858d4486252e
  Date   : Mon Nov 06 23:47:59 2017
  Subject: Make script cache hits async

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:all_processes:reported_by_os:system_memory:proportional_resident_size_avg/load_media/load_media_imgur
  Change       : 25.48% | 222894786.333 -> 279690289.667

Revision             Result                      N
chromium@514278      222894786 +- 34847999       6       good
chromium@514290      230499235 +- 53279920       6       good
chromium@514296      224082244 +- 86510433       9       good
chromium@514298      238578801 +- 104194264      14      good
chromium@514299      269849999 +- 70903887       14      bad       <--
chromium@514302      280625946 +- 63924855       9       bad
chromium@514326      284280904 +- 104708182      9       bad
chromium@514374      279690290 +- 57226042       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.media.imgur 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/8963319639474678592


For feedback, file a bug with component Speed>Bisection