On Thu, 8 Feb 2007 11:09:40 -0800 (PST) Christoph Lameter <[EMAIL PROTECTED]> wrote:
> > > > and to > > > > accurately present the machine's topology to the user without us having > > > > to > > > > go adding falsehoods like this? > > > > > > a node is a piece of memory. Without memory it doesn't make sense. > > > > Who said? I can pick up a piece of circuitry which has four CPUs and no > > RAM, wave it about then stick it in a computer. The kernel is just wrong, > > surely? > > Surely your computer has some memory so attach it to that memory (which > in a NUMA system would be one or the other node). "attach it". But it _isn't_ attached. There is no memory on this node. We seem to be saying that we should misrepresent the physical topology because the kernel doesn't handle it appropriately. > Cpu only "nodes" would mean that all memory would be off node. Meaning > whatever interconnect one has would be heavily used. Operating system and > application performance will suffer. >From this a logical step would be to change the kernel to refuse to bring memoryless nodes online at all. If that's not an approproate solution, then there must be a legtimate reason for using memoryless nodes. Which is it? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
