gistfile1.txt

$ sudo /opt/java7/bin/jmap -permstat 21101
Attaching to process ID 21101, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.51-b03
finding class loader instances ..sun.jvm.hotspot.debugger.UnmappedAddressException: cb953000
	at sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
	at sun.jvm.hotspot.debugger.PageCache.getData(PageCache.java:63)
	at sun.jvm.hotspot.debugger.DebuggerBase.readBytes(DebuggerBase.java:217)
	at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:482)
	at sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:454)
	at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readAddress(LinuxDebuggerLocal.java:423)
	at sun.jvm.hotspot.debugger.linux.LinuxAddress.getAddressAt(LinuxAddress.java:74)
	at sun.jvm.hotspot.memory.CompactibleFreeListSpace.getLiveRegions(CompactibleFreeListSpace.java:171)
	at sun.jvm.hotspot.oops.ObjectHeap$LiveRegionsCollector.doSpace(ObjectHeap.java:563)
	at sun.jvm.hotspot.memory.ConcurrentMarkSweepGeneration.spaceIterate(ConcurrentMarkSweepGeneration.java:66)
	at sun.jvm.hotspot.oops.ObjectHeap.collectLiveRegions(ObjectHeap.java:588)
	at sun.jvm.hotspot.oops.ObjectHeap.iterateSubtypes(ObjectHeap.java:417)
	at sun.jvm.hotspot.oops.ObjectHeap.iterateObjectsOfKlass(ObjectHeap.java:260)
	at sun.jvm.hotspot.oops.ObjectHeap.iterateObjectsOfKlass(ObjectHeap.java:272)
	at sun.jvm.hotspot.tools.PermStat.printClassLoaderStatistics(PermStat.java:83)
	at sun.jvm.hotspot.tools.PermStat.run(PermStat.java:66)
	at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
	at sun.jvm.hotspot.tools.PermStat.main(PermStat.java:46)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at sun.tools.jmap.JMap.runTool(JMap.java:197)
	at sun.tools.jmap.JMap.main(JMap.java:128)
done.
computing per loader stat ..Exception in thread "main" java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at sun.tools.jmap.JMap.runTool(JMap.java:197)
	at sun.tools.jmap.JMap.main(JMap.java:128)
Caused by: sun.jvm.hotspot.debugger.UnmappedAddressException: 7f90ceae81a0
	at sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
	at sun.jvm.hotspot.debugger.PageCache.getData(PageCache.java:63)
	at sun.jvm.hotspot.debugger.DebuggerBase.readBytes(DebuggerBase.java:217)
	at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:482)
	at sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:454)
	at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readAddress(LinuxDebuggerLocal.java:423)
	at sun.jvm.hotspot.debugger.linux.LinuxAddress.getAddressAt(LinuxAddress.java:74)
	at sun.jvm.hotspot.types.basic.BasicField.getAddress(BasicField.java:248)
	at sun.jvm.hotspot.types.basic.BasicAddressFieldWrapper.getValue(BasicAddressFieldWrapper.java:48)
	at sun.jvm.hotspot.memory.SystemDictionary.dictionary(SystemDictionary.java:85)
	at sun.jvm.hotspot.memory.SystemDictionary.classesDo(SystemDictionary.java:195)
	at sun.jvm.hotspot.tools.PermStat.printClassLoaderStatistics(PermStat.java:99)
	at sun.jvm.hotspot.tools.PermStat.run(PermStat.java:66)
	at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
	at sun.jvm.hotspot.tools.PermStat.main(PermStat.java:46)
	... 6 more