On Wed, May 23, 2012 at 4:23 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > On Wed, 2012-05-23 at 16:10 +0800, Liu ping fan wrote: >> the movement of vcpu >> threads among host nodes will break the topology initialized by -numa >> option. > > You want to remap vcpu to nodes? Are you bloody insane? cpu:node maps > are assumed static, you cannot make that a dynamic map and pray things > keep working. > > Also, have you any idea how expensive it is to rebuild the topology vs > migrating the vcpu? > No, do not rebuild the topology too frequently. Supposing vcpus in node-A/B/C, now node-B is unplugged, so we need to migrate some of vcpus from node-B to node-A, or to node-C. > -- 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
