<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>193935</bug_id>
          
          <creation_ts>2019-01-28 16:16:00 -0800</creation_ts>
          <short_desc>Layout Test performance-api/performance-observer-callback-after-gc.html is flaky</short_desc>
          <delta_ts>2019-01-31 12:01:06 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Tools / Tests</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>191041</dup_id>
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Shawn Roberts">sroberts</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>jlewis3</cc>
    
    <cc>lforschler</cc>
    
    <cc>ryanhaddad</cc>
    
    <cc>tsavell</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1499257</commentid>
    <comment_count>0</comment_count>
    <who name="Shawn Roberts">sroberts</who>
    <bug_when>2019-01-28 16:16:00 -0800</bug_when>
    <thetext>The following layout test is flaky on Mojave Debug

performance-api/performance-observer-callback-after-gc.html

Probable cause:

Test is flaky on every debug build I have tested from 2299992 to current. Causing failures approximately 1/500 to 4/500 of the time using the following command: 

run-webkit-tests --root debug- performance-api/performance-observer-callback-after-gc.html --iterations 500 -f --debug

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=performance-api%2Fperformance-observer-callback-after-gc.html

Diff:

--- /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/performance-api/performance-observer-callback-after-gc-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/performance-api/performance-observer-callback-after-gc-actual.txt
@@ -3,9 +3,8 @@
 On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
 
 
-PerformanceObserver callback fired: 1 entries
+PerformanceObserver callback fired: 3 entries
 PASS mark1
-PerformanceObserver callback fired: 2 entries
 PASS mark2
 PASS mark3
 PASS successfullyParsed is true</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1500690</commentid>
    <comment_count>1</comment_count>
    <who name="Alexey Proskuryakov">ap</who>
    <bug_when>2019-01-31 12:01:06 -0800</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of bug 191041 ***</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>