On Sun, May 20, 2012 at 4:07 AM, Josh Boyer <jwboyer@xxxxxxxxxx> wrote: > > On Sat, May 19, 2012 at 02:54:33PM +0200, Xose Vazquez Perez wrote: > > > > >* Tue Jan 17 2012 Dave Jones <davej@xxxxxxxxxx> > > >- Rawhide builds now use MAXSMP on x86. > > >- For release builds, set x86-64 to support 64 CPUs. > > > If larger systems become widespread, we can increase in an update. > > > > _today_ > > > > amd: 4sockets * 16cores = 64 > > Awesome. Got that covered still. > > > intel: 4sockets * 10cores * 2threads = 80 > > Which particular CPU/Motherboard combo is that, and how often do we see > it in Fedora? > > I'm not opposed to bumping it up to 128 or something, but I'm curious > how many people are actually going to see benefits. > > josh At least in my case I did run Fedora 12-16 on 4S and 8S machines to test software scalability on (extreme) high-end hardware. Though, IMHO anyone that's crazy enough to run Fedora on a high-end 4S/8S machine is more than capable of rebuilding the kernel with CONFIG_NR_CPUS 256... However, given the fact that x86_64 machines tend to be far less memory constrained than i686 machines, I doubt that raising the limit to 128 will cause too many issues. (Isn't NR_CPUS == 512 in el6?) - Gilboa _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel
