Finding cache size

[Arta]

Does anyone know of a way (functional under >=win2k)  to find the size of the processor's L2 cache?

[Skywing]

You can use cpuid with level=2 to get it from P4s...

[Arta]

You can use cpuid with level=2 to get it from P4s...

Would rather use a non-cpuspecific way if there is one.

[Adron]

You could make a loop doing an operation on a dataset of a certain size. Increase size step by step and measure performance. When performance drops more than linearly, you've hit the cache size.