On 2011-04-13 23:41, Dimitry Andric wrote: ...
But I don't really see why, yet. :) With r220532, it worked fine.
Ah, I failed to notice the commit that came before, r220583. Apparently, it can happen (at least in a VM environment) that the DELAY(1000) in this fragment from cpu_est_clockrate(): wrmsr(MSR_MPERF, 0); wrmsr(MSR_APERF, 0); tsc1 = rdtsc(); DELAY(1000); mcnt = rdmsr(MSR_MPERF); acnt = rdmsr(MSR_APERF); tsc2 = rdtsc(); intr_restore(reg); perf = 1000 * acnt / mcnt; will still read 0 from MSR_MPERF, leading to a division by zero. Maybe just fallback to the second method in the 'else' branch then? _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"