Messages in this thread | | | Date | Tue, 7 Feb 2006 09:42:15 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [PATCH 1/5] cpuset memory spread basic implementation |
| |
On Tue, 7 Feb 2006, Andi Kleen wrote:
> > The opterons are some strange mix of SMP and NUMA system. The NUMA "nodes" > > are on the same motherboard > > Actually it's not true - 8 socket systems are built out of two > boards. And there are much bigger systems upcomming.
But they are still next to one another.... No distance to cover,. > > > and therefore there are only small latencies > > involved. NUMA only gives small benefits. > > That's also not true. Everytime I get memory placement for > process memory wrong users complain _very_ loudly and there > are clear benefits in benchmarks too.
What are the latencies in an 8 way opteron system? I.e. Local memory, next processor, most distant processor?
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |