On Sun, Jul 05, 2009 at 05:53:17PM +0300, Avi Kivity wrote: > On 07/05/2009 04:23 PM, Alexander Graf wrote: >>> I thought of using -smp [processors=]2,cores=4,threads=2 (for a total >>> of 16 threads), but I think it makes more sense with -cpu. >> >> >> I actually think putting this in -smp makes more sense. -cpu really >> shouldn't need to be touched by normal users and as long as you can >> either -cpu host or -cpu safe that should be enough. > > Maybe. But in that case -cpu core2duo should imply cores=2 and -smp 2 > -cpu core2duo will bring up 4 cores spread across two sockets. > core2duo does not imply 2 cores. OSes use cpuid to discover this information. >> But then again maybe we should replace -smp with something more useful >> like -numa where you'd then specify #CPUs, #cores, mem-cpu connection, >> etc. > > I'd prefer -numa to specify the memory topology (and connections of > sockets to memory nodes), and -smp or -cpu to specify the intra-socket > topology. > I agree. -numa is a different story. It is possible to have zillion socket setup without numa at all. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
