--- old/src/jdk.jfr/share/conf/jfr/profile.jfc	2019-09-26 22:30:03.092354642 +0800
+++ new/src/jdk.jfr/share/conf/jfr/profile.jfc	2019-09-26 22:30:02.946349557 +0800
@@ -27,6 +27,31 @@
       <setting name="period">1000 ms</setting>
     </event>
 
+    <event name="jdk.SymbolTableStatistics">
+      <setting name="enabled">true</setting>
+      <setting name="period">10 s</setting>
+    </event>
+
+    <event name="jdk.StringTableStatistics">
+      <setting name="enabled">true</setting>
+      <setting name="period">10 s</setting>
+    </event>
+
+    <event name="jdk.PlaceholderTableStatistics">
+      <setting name="enabled">true</setting>
+      <setting name="period">10 s</setting>
+    </event>
+
+    <event name="jdk.LoaderConstraintsTableStatistics">
+      <setting name="enabled">true</setting>
+      <setting name="period">10 s</setting>
+    </event>
+
+    <event name="jdk.ProtectionDomainCacheTableStatistics">
+      <setting name="enabled">true</setting>
+      <setting name="period">10 s</setting>
+    </event>
+
     <event name="jdk.ThreadStart">
       <setting name="enabled">true</setting>
     </event>