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Issue 739294 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Sep 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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5.5% regression in dromaeo.domcoremodify at 472980:473207

Project Member Reported by rmcilroy@chromium.org, Jul 5 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=739294

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7v_uvQsM


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

android-webview-nexus6
Cc: b...@chromium.org
Owner: b...@chromium.org

=== Auto-CCing suspected CL author bnc@chromium.org ===

Hi bnc@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : bnc
  Commit : 6b86d7c8b20f25282abef00a275c40ced632aab4
  Date   : Fri May 19 00:57:43 2017
  Subject: Return Job as unique_ptr from factory methods.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : dromaeo.domcoremodify
  Metric       : dom/dom
  Change       : 2.02% | 67.8714312414 -> 66.3922093163

Revision             Result                   N
chromium@472979      67.8714 +- 1.34551       9      good
chromium@472994      67.9202 +- 0.663629      6      good
chromium@473001      68.1346 +- 1.57939       9      good
chromium@473002      67.0566 +- 1.07208       6      bad       <--
chromium@473003      67.1345 +- 1.05326       6      bad
chromium@473005      66.8976 +- 2.2045        9      bad
chromium@473008      66.6401 +- 1.14557       6      bad
chromium@473036      67.0436 +- 1.34556       9      bad
chromium@473093      66.3458 +- 0.805549      6      bad
chromium@473207      66.3922 +- 0.966197      6      bad

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 dromaeo.domcoremodify

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8974918499908809344


For feedback, file a bug with component Speed>Bisection
Owner: ----
The results of that bisect don't really show a change from that CL. Looking at the graph, it is hard to tell which revision range it dropped at. Kicked off a bisect with a wider range. Sorry for the noise!

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

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


Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : dromaeo.domcoremodify
  Metric       : dom/dom


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 dromaeo.domcoremodify

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8974811214995349232


For feedback, file a bug with component Speed>Bisection
Kicked one more bisect on a wider range, will close if it doesn't repro.
Project Member

Comment 9 by 42576172...@developer.gserviceaccount.com, Aug 22 2017


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

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


Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : dromaeo.domcoremodify
  Metric       : dom/dom


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 dromaeo.domcoremodify

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970646491513204112


For feedback, file a bug with component Speed>Bisection
Status: WontFix (was: Untriaged)

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