Hi, the following 4 patches add NUMA host binding to qemu(-kvm). They allow to specify NUMA policies to be applied to each of the (separately specified) guest NUMA nodes. It mimics numactl's syntax, allowing "membind", "preferred" and "interleave" as possible policies. An example is: $ qemu -smp 4 ... -numa node,cpus=0,mem=1024M \ -numa node,cpus=1-2,mem=2048M -numa node,cpus=3,mem=1024M \ -numa host,nodeid=0,membind=0 -numa host,nodeid=1,interleave=0-1 \ -numa host,nodeid=2,preferred=!0 The complete syntax is: -numa host,nodeid=<n>,\ (membind|preferred|interleave)=[+!]<hostnode>[-<hostnode>] The '+' denotes CPUSET relative nodes, '!' means negation (see numactl(8)). As it can be easier done from outside of QEMU, I completely left out vCPU binding, AFAIK management applications do this today already. This version is based on the new generic bitmap code submitted with patch 11/15 of the VNC update by Corentin Chary on Aug 11th: http://lists.gnu.org/archive/html/qemu-devel/2010-08/msg00517.html So it requires this patch to build (but not to apply). Please comment! Regards, Andre. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
