+ COUNT_STAR uint64
+ COUNT_READ uint64
+ COUNT_WRITE uint64
+ COUNT_MISC uint64
+
+ SUM_TIMER_WAIT uint64
+ SUM_TIMER_READ uint64
+ SUM_TIMER_WRITE uint64
+ SUM_TIMER_MISC uint64
+
+ SUM_NUMBER_OF_BYTES_READ uint64
+ SUM_NUMBER_OF_BYTES_WRITE uint64