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

[Jesse Barnes <jbarnes@xxxxxxxxxxxx>]

Rik van Riel <riel <at> redhat.com> writes: 
> Two out of three is enough.  I don't see the need for 
> both CONFIG_DISCONTIGMEM and CONFIG_VIRTUAL_MEM_MAP. 
 
Well, we need it for sn2.  We have very large memory holes within a node, so 
we use the virtual memmap to make the mem_map array within a node virtually 
contiguous. 
 
> 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. 
 
Yep, it would probably be a mistake to overoptimize Xen on NUMA at this point, 
but doing basic things like this makes sense. 
 
Jesse 



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel