lapic@2k interrukts eating CPU cycles

[John Baldwin]

On Wednesday 22 June 2005 11:08 am, Bruce M Simpson wrote:
> On Wed, Jun 22, 2005 at 03:50:24PM +0100, Robert Watson wrote:
> > I have a feature request in to John to add statistics gathering on IPIs,
> > since he's currently reworking the interrupt paths.
>
> I like this LAPIC change a lot. Actually I like APICs a lot. They may not
> give you 'real' vectored hardware interrupts a la SPARC and PowerPC, but
> at least it comes a bit closer.
>
> It would be nice to be doing APIC on uniprocessor systems a bit further
> down the line, but that's for the wishlist -- the 8259s are not going away
> just yet.

I think all new systems going forward are going to have APICs though.  HTT and 
multi core require APIC just like SMP does.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org