On Thu, 26 Mar 2020, Zhang Rui wrote: > BTW, it is better to get the output of "rdmsr 0x65C" as well. OK, for the "3 counters" case (as per my last E-mail): CPU 0 MSR 0x65C value: dd0000 CPU 1 MSR 0x65C value: dd0000 CPU 2 MSR 0x65C value: dd0000 CPU 3 MSR 0x65C value: dd0000 CPU 4 MSR 0x65C value: dd0000 CPU 5 MSR 0x65C value: dd0000 CPU 6 MSR 0x65C value: dd0000 CPU 7 MSR 0x65C value: dd0000 "4 counters" (i.e., with the "psys domain" being found) results coming up soon. -Kenny -- Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Silicon Valley