backport JDK-8369992

Author: GoeLin

src/jdk.jfr/share/conf/jfr/default.jfc

@@ -38,17 +38,17 @@
     </event>
 
     <event name="jdk.PlaceholderTableStatistics">
-      <setting name="enabled">true</setting>
+      <setting name="enabled">false</setting>
       <setting name="period">10 s</setting>
     </event>
 
     <event name="jdk.LoaderConstraintsTableStatistics">
-      <setting name="enabled">true</setting>
+      <setting name="enabled">false</setting>
       <setting name="period">10 s</setting>
     </event>
 
     <event name="jdk.ProtectionDomainCacheTableStatistics">
-      <setting name="enabled">true</setting>
+      <setting name="enabled">false</setting>
       <setting name="period">10 s</setting>
     </event>