On 14/8/17 3:08PM, Kevin Oberman wrote: > Again, the documentation lags reality. The default was changed for 11.0. It > is still conservative. In ALMOST all cases, Cmax will yield the bast results. > However, on large systems with many cores, Cmax will trigger very poor > results, so the default is C2, just to be safe. > > As far as possible TSC impact, I think older processors had TSC issues when > not all cores ran with the same clock speed. That said, I am not remotely > expert on such issues, so don't take this too seriously.
Thanks Kevin What does 'large' and 'many cores' mean here? Is 24 cores large or small? For a server do we ever want the CPU to enter states other than C1? Ari -- --------------------------> Aristedes Maniatis CEO, ish https://www.ish.com.au GPG fingerprint CBFB 84B4 738D 4E87 5E5C 5EFA EF6A 7D2E 3E49 102A _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
