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Issue 760178 link

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Issue metadata

Status: Duplicate
Merged: issue 759554
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.2%-3.5% regression in smoothness.key_silk_cases at 497554:497661

Project Member Reported by pmeenan@chromium.org, Aug 29 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 29 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760178

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d500e806b751990713f911d21ba70cd53652c686a4e9762e180034437f94b225


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

android-nexus7v2
android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 29 2017

Mergedinto: 759554
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 9b8fb34db903643b759635086dcf0da90b1e3082
  Date   : Sat Aug 26 00:49:56 2017
  Subject: gpu: Command buffer multi flush.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.key_silk_cases
  Metric       : mean_frame_time/http___groupcloned.com_test_plain_list-recycle-transform.html
  Change       : 3.74% | 16.857 -> 17.4875

Revision             Result                    N
chromium@497557      16.857 +- 0.176533        6      good
chromium@497607      16.7268 +- 0.136099       6      good
chromium@497614      16.7117 +- 0.0803326      6      good
chromium@497615      17.5698 +- 0.477819       6      bad       <--
chromium@497616      17.5873 +- 0.412758       6      bad
chromium@497617      17.4985 +- 0.335627       6      bad
chromium@497620      17.5365 +- 0.203282       6      bad
chromium@497632      17.5317 +- 0.284797       6      bad
chromium@497657      17.4875 +- 0.137708       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...groupcloned.com.test.plain.list.recycle.transform.html smoothness.key_silk_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969912099887990288


For feedback, file a bug with component Speed>Bisection

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