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xen-ia64-devel
Re: [Xen-ia64-devel] [patch] NODE_SHIFT
Alex Williamson wrote:
> On Tue, 2007-06-05 at 09:13 +0200, Jes Sorensen wrote:
>
>> diff -r a72f0131bd89 -r 6828cbe7e55d xen/include/asm-ia64/config.h
>> --- a/xen/include/asm-ia64/config.h Thu May 31 14:47:08 2007 -0600
>> +++ b/xen/include/asm-ia64/config.h Tue Jun 05 09:11:21 2007 +0200
>> @@ -29,7 +29,7 @@
>> #define NR_CPUS 64
>> #define CONFIG_NUMA
>> #define CONFIG_ACPI_NUMA
>> -#define NODES_SHIFT 3
>> +#define NODES_SHIFT 8
>> #define MAX_NUMNODES (1 << NODES_SHIFT)
>> #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
>> #define MAX_PXM_DOMAINS 256
>
> Doesn't supporting 256 nodes, but only 64 CPUs seem a little out of
> balance? I can't see making NODES_SHIFT more than about 6 with the
> current NR_CPUS. Are we ready to increase NR_CPUS too? Thanks,
We offer memory-only blades in our systems :-)
I plan to bump up NR_CPUS too at some point, but if you prefer we can
set NODES_SHIFT to 6 for now, but that just means you'll have to take
another patch for it later.
Cheers,
Jes
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