#pragma namespace("\\\\.\\root\\ntperfdata") [perf] class MyPerfCounter { [key, label] uint32 CounterID; uint32 Value1; uint64 Value2; }; instance of MyPerfCounter { CounterID = 1; Value1 = 101; Value2 = 1001; }; instance of MyPerfCounter { CounterID = 2; Value1 = 202; Value2 = 2002; };