On Tue, Nov 15, 2011 at 1:20 PM, <m...@freebsd.org> wrote: > On Tue, Nov 15, 2011 at 1:02 PM, Hans Petter Selasky <hsela...@c2i.net> wrote: >> For USB compliant operation, the USB stack requires hz to be greater or equal >> to 250 hz, to put it like that. Mostly a requirement in USB gadget/device >> mode. > > Really? That's news to me. Is that documented somewhere? I know we > still use hz=100 internally, but we're on stable/7 still so not using > the new USB stack yet.
... and I also just remembered that I have seen recommendations that, when FreeBSD is used as a virtual machine, hz should be set to 100 so that the virtual interrupt overhead is reduced. Those two recommendations are at odds with each other. Thanks, matthew _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
