Messages in this thread | | | Date | Wed, 7 Apr 2004 15:52:25 -0700 | From | Andrew Morton <> | Subject | Re: NUMA API for Linux |
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Andi Kleen <ak@suse.de> wrote: > > We can discuss changes when someone shows numbers that additional > optimizations are needed. I haven't seen such numbers and I'm not convinced > sharing is even a good idea from a design standpoint. For the first version > I just aimed to get something working with straight forward code. > > To put it all in perspective: a policy is 12 bytes on a 32bit machine > (assuming MAX_NUMNODES <= 32) and 16 bytes on a 64bit machine > (with MAX_NUMNODES <= 64)
sizeof(vm_area_struct) is a very sensitive thing on ia32. If you expect that anyone is likely to actually use the numa API on 32-bit, sharing will be important.
It should be useful for SMT, yes?
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