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Issue 701350 link

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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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17.8% regression in blink_perf.shadow_dom at 456321:456326

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=701350

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtNLW-ggM


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 14 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_nexus6_aosp_perf_bisect
  Benchmark    : blink_perf.shadow_dom
  Metric       : v1-slot-append/v1-slot-append
  Change       : 16.11% | 338.538940107 -> 284.009909196

Revision             Result                  N
chromium@456320      338.539 +- 2.21803      6      good
chromium@456322      339.749 +- 2.24676      6      good
chromium@456323      278.45 +- 2.02464       6      bad       <--
chromium@456326      284.01 +- 3.13584       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 blink_perf.shadow_dom

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985138329520590048

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6150822238355456


| 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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