SHORT L2 snoop hits

EVENTSET
PMC0  SNP_HITM_L2

METRICS
Runtime (RDTSC) [s] time
Snoop bandwidth [MBytes/s] 1.0E-06*PMC0*64.0/time
Snoop data volume [GBytes] 1.0E-09*PMC0*64.0

LONG
Formulas:
Snoop bandwidth [MBytes/s] = 1.0E-06*SNP_HITM_L2*64.0/time
Snoop data volume [GBytes] = 1.0E-09*SNP_HITM_L2*64.0
-
Snoop traffic caused by HITM requests. HITM requests are L2 requests that
are served by another core's L2 cache but the remote cache line is in modified
state.

