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Issue metadata

Status: Duplicate
Merged: issue 701361
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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59.9% regression in blink_perf.dom at 456323:456335

Project Member Reported by nzolghadr@chromium.org, Mar 14 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=701362

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1LOt4AsM


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

android-webview-nexus5X
Project Member

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

Mergedinto: 701361
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : meade
  Commit : 3a001533b29c0fe28f2354285b2c2ac8d57d8ce6
  Date   : Mon Mar 13 05:26:20 2017
  Subject: Un-DCHECK-guard ThreadRestrictionVerifier for strings.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : blink_perf.dom
  Metric       : modify-element-id/modify-element-id
  Change       : 69.61% | 648.783142857 -> 1100.38744444

Revision             Result                  N
chromium@456322      648.783 +- 965.475      14      good
chromium@456323      1204.74 +- 1527.95      9       bad       <--
chromium@456324      933.487 +- 1025.89      14      bad
chromium@456326      1159.85 +- 1527.62      9       bad
chromium@456329      1159.42 +- 1524.34      9       bad
chromium@456335      1100.39 +- 1325.02      9       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 blink_perf.dom

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985136913815903728

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5218733536051200


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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