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Issue 760521 link

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Issue metadata

Status: Duplicate
Merged: issue 755229
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.2% regression in system_health.memory_desktop at 494573:494704

Project Member Reported by ulan@google.com, Aug 30 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 30 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760521

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8e8d2fcf243432c1e5bd80fd21eecf88e7bb6ea0309d297070b59746c3b3d07d


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

chromium-rel-win10
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 30 2017

Mergedinto: 755229
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Khushal
  Commit : 78cf6d75aa98c913dfcf79455ba70318438613bf
  Date   : Wed Aug 16 03:57:39 2017
  Subject: blink: Cache PaintImages in BitmapImage.

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : system_health.memory_desktop
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:allocated_objects_size_avg/load_games/load_games_bubbles
  Change       : 2.93% | 9244074.66667 -> 9514484.0

Revision             Result                  N
chromium@494572      9244075 +- 49552.8      6      good
chromium@494638      9260520 +- 93507.2      6      good
chromium@494671      9245412 +- 70942.5      6      good
chromium@494688      9257233 +- 71206.3      6      good
chromium@494689      9203329 +- 95845.7      6      good
chromium@494690      9469533 +- 196466       6      bad       <--
chromium@494692      9461287 +- 133110       6      bad
chromium@494696      9484735 +- 274027       6      bad
chromium@494704      9514484 +- 251152       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.games.bubbles 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/8969838969838846208


For feedback, file a bug with component Speed>Bisection

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