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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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4.1% regression in system_health.memory_mobile at 492661:493341

Project Member Reported by ericrk@chromium.org, Aug 15 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 15 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755649

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ce40cdfd4cd86ab8191eed0eb25ec12cea088766aa9ce22c3a43667620198735


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 15 2017

Mergedinto: 755229
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Khushal
  Commit : 1b8abc019a5b476d503bff7405120c44036799eb
  Date   : Thu Aug 10 05:16:17 2017
  Subject: cc/blink: Replace SkImageGenerator with PaintImageGenerator.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_os:system_memory:proportional_resident_size_avg/browse_media/browse_media_flickr_infinite_scroll
  Change       : 3.59% | 130718254.667 -> 135407833.333

Revision             Result                    N
chromium@492660      130718255 +- 1956173      6      good
chromium@493001      131573465 +- 2786295      6      good
chromium@493171      130823727 +- 1173101      6      good
chromium@493214      132661807 +- 3172583      9      good
chromium@493235      131773999 +- 2600470      6      good
chromium@493246      131998368 +- 3503512      9      good
chromium@493249      132129839 +- 2285569      6      good
chromium@493250      133446532 +- 3959152      9      good
chromium@493251      139215748 +- 8287613      6      bad       <--
chromium@493256      136140164 +- 4665530      6      bad
chromium@493341      135407833 +- 3879444      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=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.media.flickr.infinite.scroll system_health.memory_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971169730644349056


For feedback, file a bug with component Speed>Bisection

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