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Issue 763090 link

Starred by 1 user
Status: Duplicate
Merged: issue 763095
Owner: ----
Closed: Sep 2017
Cc:
tdresser@google.com
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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6.6%-18.8% regression in loading.desktop at 499591:499797

Project Member Reported by tdres...@chromium.org, Sep 7 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Sep 7 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763090

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5dcf561748f157f1082c4b2256746e38f2fa1c58dfa3d97ee97b0f4ae88458e1


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 7 2017 


=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_air_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/money.cnn


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=money.cnn loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969082076274464912


For feedback, file a bug with component Speed>Bisection
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Sep 7 2017

Mergedinto: 763095
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Eric Karl
  Commit : 6a0f206ccbe0b1e81f53a79f37474a4ba3c760e8
  Date   : Tue Sep 05 20:05:40 2017
  Subject: Use GPU Discardable in Image Decode Cache

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/amazon.co.jp
  Change       : 6.79% | 126.362499997 -> 134.938166668

Revision             Result                  N
chromium@499670      126.362 +- 5.2084       6      good
chromium@499699      128.177 +- 8.57931      9      good
chromium@499713      126.614 +- 10.6772      9      good
chromium@499720      126.24 +- 5.30281       6      good
chromium@499722      128.211 +- 5.21737      6      good
chromium@499723      126.914 +- 6.58224      6      good
chromium@499724      134.651 +- 4.58251      6      bad       <--
chromium@499727      133.607 +- 7.44208      9      bad
chromium@499783      134.938 +- 3.09086      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=amazon.co.jp loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969078491724751792


For feedback, file a bug with component Speed>Bisection
►

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