On Tue, Feb 28, 2012 at 11:33:03AM -0500, Dave Allan wrote:
On Tue, Feb 28, 2012 at 10:10:50PM +0800, Osier Yang wrote:
numad is an user-level daemon that monitors NUMA topology and processes resource consumption to facilitate good NUMA resource alignment of applications/virtual machines to improve performance and minimize cost of remote memory latencies. It provides a pre-placement advisory interface, so significant processes can be pre-bound to nodes with sufficient available resources.
More details: http://fedoraproject.org/wiki/Features/numad
"numad -w ncpus:memory_amount" is the advisory interface numad provides currently.
This patch add the support by introducing new XML like: <numatune> <cpu required_cpus="4" required_memory="524288"/> </numatune>
Isn't the usual case going to be the vcpus and memory in the guest? IMO we should default to passing those numbers to numad if required_cpus and required_memory are not provided explicitly.
Indeed, why you would want to specify anything different ? At first glance my reaction was just skip the XML and call numad internally automatically with the guest configured allocation Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|