[libvirt-users] libvirt daemon and numad daemon

[Eric Blake]

On 05/07/2013 11:19 PM, Gao Yongwei wrote:
> Hello all, I installed libvirt-0.10.2-18.el6.x86_64  ,is there any
> relationship between libvirtd and numad ? I found that when I started numad
> daemon , the vm can start in a shorter time, but when
> numad daemon stoped , vm could still start ,just with a longer start time.
> how does this work with the two daemons? thanks.

Yes, libvirt is able to take advantage of libnuma calls into numad for
determining auto-placement of guest resources on a single node, rather
than spread out across multiple NUMA nodes, with the corresponding
performance improvements.  You can also request specific pinning rather
than relying on automatic placement.  For more details, here is the
portion of the XML that controls how libvirt will interact with numad:

http://libvirt.org/formatdomain.html#elementsNUMATuning

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 621 bytes
Desc: OpenPGP digital signature
URL: <http://listman.redhat.com/archives/libvirt-users/attachments/20130508/4528bfbe/attachment.sig>