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. 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. _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"