Re: [Libvir] Extending libvirt to probe NUMA topology
On Thu, Jun 14, 2007 at 02:08:12PM +0100, Richard W.M. Jones wrote:
Daniel P. Berrange wrote:
> - Linux/Solaris Xen - hypercalls
> - Linux non-Xen - libnuma
> - Solaris non-Xen - liblgrp
>
>The Xen & Linux modelling seems reasonably similar IIRC, but Solaris is
>a slightly different representational approach.
The Solaris approach seems to be fully hierarchical as far as I can work
out.
yup that's what I infer from lgrp_root, lgrp_children and lgrp_parents
well except in a tree would would only have one parent ever that I'm not
sur I really understand
http://docs.sun.com/app/docs/doc/816-5172/6mbb7bu79?a=view
That seems to argue for extending the capabilities XML to describe
nodes, in as much as the XML can start off as a flat list of NUMA nodes
(for IBM) but later be made hierarchical if necessary.
Agreed, it may be a bit painful in a sense to have to parse XML provided
back from libvirt, but 1/ you should that once per Node 2/ it's not the
only place in libvirt
Probably need a bit more thinking about this though,
Daniel
--
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Daniel Veillard | virtualization library http://libvirt.org/
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