On Sat, Jul 13, 2013 at 02:27:18AM +0200, Dario Faggioli wrote:
Although, having it depending on Xen >= 4.3 (by using the proper libxl feature flag).
Xen currently implements a NUMA placement policy which is basically the same as the 'interleaved' policy of `numactl', although it can be applied on a subset of the available nodes. We therefore hardcode "interleave" as 'numa_mode', and we use the newly introduced libxl interface to figure out what nodes a domain spans ('numa_nodeset').
With this change, it is now possible to query the NUMA node affinity of a running domain:
[raistlin@Zhaman ~]$ sudo virsh --connect xen:/// list Id Name State ---------------------------------------------------- 23 F18_x64 running
[raistlin@Zhaman ~]$ sudo virsh --connect xen:/// numatune 23 numa_mode : interleave numa_nodeset : 1
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> --- Changes from v2: * iterators turned from int to size_t
Changes from v1: * fixed coding style, as requested during review; * VIR_TYPED_PARAM_STRING_OKAY handled more properly; --- src/libxl/libxl_driver.c | 141 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+)
ACK 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 :|