Ivan Voras <ivo...@freebsd.org> writes: > 2009/1/30 Julian Stecklina <j...@alien8.de>: >> Mister Olli <mister.o...@googlemail.com> writes: >> >>> Hi, >>> >>> I've never experimented with the kern.hz variable, but on all >>> configuration examples for 8-CURRENT if always seen 'kern.hz=100'. >>> >>>>From where did you get your configuration? >> >> I use the default config (albeit renamed to BLITZXEN) from 8-CURRENT. > > Due to bad performance of high HZ in VMs, in 8-CURRENT it is > explicitly reduced to 10 if the kernel is running under any kind of > virtual environment. This is a somewhat theoretical number and > probably needs tuning.
Probably. > If you're interested in trying it out, you can increase it by adding > "kern.hz=xxx" to /boot/loader.conf and seeing what is the actual > performance influence of high HZ under Xen. I am going to do that once the timing stuff is figured out. No point in making benchmarks when the clock is confused. :) I cannot repeat it enough: Still great to see FreeBSD on Xen! Regards, -- Julian Stecklina Well, take it from an old hand: the only reason it would be easier to program in C is that you can't easily express complex problems in C, so you don't. - Erik Naggum (in comp.lang.lisp) _______________________________________________ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
