[data from a 133MHz Pentium (classic)]

PERFCTR INIT: vendor 0, family 5, model 2
PERFCTR INIT: NITER == 64
PERFCTR INIT: rdpmc ticks == 0
PERFCTR INIT: rdmsr (counter) ticks == 1913
PERFCTR INIT: rdmsr (evntsel) ticks == 1463
PERFCTR INIT: wrmsr (counter) ticks == 2286
PERFCTR INIT: wrmsr (evntsel) ticks == 2182
PERFCTR INIT: loop overhead ticks == 54
