On Monday 20 October 2008 08:38 pm, Jung-uk Kim wrote: > Author: jkim > Date: Tue Oct 21 00:38:00 2008 > New Revision: 184102 > URL: http://svn.freebsd.org/changeset/base/184102 > > Log: > Turn off CPU frequency change notifiers when the TSC is P-state > invariant or it is forced by setting > 'kern.timecounter.invariant_tsc' tunable to non-zero.
I believe recent Intel CPUs also have P-state invariant TSCs and I saw some people reported issues with them as well. In fact, I bought a new AMD CPU and it has P-state invariant TSC. But the CPU ID wasn't set. I heard BIOS wouldn't set it if all cores are not synchronized. So, I had to force it with the tunable. :-( Jung-uk Kim _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
