MBeanJVMBufferPoolStats 59 true false false MBeanJVMBufferPoolStats false java.nio:type=BufferPool,name=direct dynamic JVMMetrics TotalCapacity 1 long 1 MemoryUsed 1 long 2 Count 1 long 3 java.nio:type=BufferPool,name=mapped dynamic JVMMetrics TotalCapacity 1 long 4 MemoryUsed 1 long 5 Count 1 long 6