Windows 2008 R2 / NUMA with >64 cores

I have a a Windows Datacenter 2008 R2 Server configured with 4 nodes, each

with 8 six core processors for a total of 98 cores. I am running into a

whole mess of performance problems so serve that a basic 8 core server with

12 GB of memory is running twice as fast.

By default, when a server has more then 64 cores, it assigns them evenly

into groups with a max of 64 CPU per group. So in my case I have 2 CPU

groups with 48 CPUs each.

Now the problem I am running into is that window OS applications, like

perfmon that will only see the CPU assigned to group 0. In this case , I

want to use perfmon to monitor all the cpu, but it will only show be the

first 48. What do in need to do to be able to monitor all the cpu?

I also noticed that group 0 has cpu from node 0 and 2, and group 1 has cpu

from node 1 and 3. Now if applications are going to be access the processors

by their groups, I would want the group to contain nodes that were direct

neighbors to each other (i.e node 0 and 1) so that the application/threads

can access the memory that is closest to the CPU it is running on.

Thx

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William F. Kinsley

NextGen Healthcare Info. Sys. Inc.