Re: [Xen-devel] A tale of three memory allocators

[Rik van Riel <riel@xxxxxxxxxx>]

On Thu, 17 Mar 2005, Magenheimer, Dan (HP Labs Fort Collins) wrote:

> Said patch is still pending because coincidentally Greg
> is currently looking at porting Xen/ia64 to one of those newfangled
> ia64 NUMA machines.  "I would like to turn on CONFIG_NUMA.
> CONFIG_DISCONTIGMEM, and CONFIG_VIRTUAL_MEM_MAP," said Greg.

Two out of three is enough.  I don't see the need for
both CONFIG_DISCONTIGMEM and CONFIG_VIRTUAL_MEM_MAP.

I guess that having a NUMA aware allocator could come
in handy though, so guest domains get their memory from
the right node wrt. to where they get CPU time scheduled.

To me, that would suggest that Ian's hunch is right and
the proper thing to do would be different instances of
Rusty's simple allocator.

-- 
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan


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