On Tue, Nov 08, 2005 at 06:47:47PM +0100, David Landgren wrote: > And Kris Kennaway did write: > > >On Mon, Nov 07, 2005 at 05:15:55PM +0100, Achim Patzner wrote: > > > >>Am 07.11.2005 um 16:27 schrieb Ollivier Robert: > >> > > [...] > > >>I remember someone writing that the intermediate state of -CURRENT > >>while removing the giant lock around the kernel wasn't viable with > >>more than four CPUs as it would completely deadlock from time to > >>time. I guess we're a bit further down the road... > > > > > >That certainly seems to be the case. You want to use FreeBSD 6.0, > >which has excellent performance and stability on SMP in my testing, > >even with 14 CPUs. FreeBSD 5.4 is definitely not up to it, since VFS > >is under Giant. > > Well I'm going to take the plunge and bring an HP Netserver LT 6000 with > 6 CPUs up from 5.4-STABLE to 6. > > Are there any obvious additions or subtractions from a 5.x kernel > configuration file? Is ADAPTIVE_GIANT now obsolete?
I think you still want it - it was a net win the last time I measured it. That's it though, really. Kris
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