I have some changes that are needed anyway, I will change this to a tuneable.
Jack On Mon, Jul 30, 2012 at 11:45 AM, John Baldwin <j...@freebsd.org> wrote: > On Wednesday, July 25, 2012 7:28:15 am Luigi Rizzo wrote: > > Author: luigi > > Date: Wed Jul 25 11:28:15 2012 > > New Revision: 238765 > > URL: http://svn.freebsd.org/changeset/base/238765 > > > > Log: > > Use legacy interrupts as a default. This gives up to 10% speedup > > when used in qemu (and this driver is for non-PCIe cards, > > so probably its largest use is in virtualized environments). > > > > Approved by: Jack Vogel > > MFC after: 3 days > > Why not make this a tunable or some such? You could even have it only use > the > legacy handler under qemu easily enough. There's no reason this has to be > a > compile-time option. This is almost certainly slower on real hardware > where > this is important to work around dubious Intel Host-PCI bridges that > result in > aliased USB interrupts for every em(4) interrupt. > > -- > John Baldwin > _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
