On Tue, Sep 18, 2012 at 2:00 AM, Linda Walsh <[email protected]> wrote: > Does the kernel support scheduling based on the different speed of > memory between "on die" vs. "off die"? I was surprised to see > that it viewed my system as 1 NUMA node with all 12 on 1 node -- when > I know that it is physically organized as 2x6. > Do I have to configure that manually or did I maybe turn off something > in my kernel config I should have turned on?
Do you have anything printed with: # acpidump -a --table SRAT ? I have a Dell box with 2 physical CPUs, each of them has 6 cores. If I enable "Node Interleaving" in BIOS' Memory Setting, and boot the kernel, the SRAT table will be invisible to Linux - results the same topology as you got. If I disable "Node Interleaving" and boot the kernel, SRAT is present, and the topology is correct. Hope that helps. -- Thanks, Jike -- 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/
