mirror of https://gitee.com/openkylin/libvirt.git
0f8e7ae33a
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 a new XML attribute for <vcpu>. e.g. <vcpu placement="auto">4</vcpu> <vcpu placement="static" cpuset="1-10^6">4</vcpu> The returned advisory nodeset from numad will be printed in domain's dumped XML. e.g. <vcpu placement="auto" cpuset="1-10^6">4</vcpu> If placement is "auto", the number of vcpus and the current memory amount specified in domain XML will be used for numad command line (numad uses MB for memory amount): numad -w $num_of_vcpus:$current_memory_amount / 1024 The advisory nodeset returned from numad will be used to set domain process CPU affinity then. (e.g. qemuProcessInitCpuAffinity). If the user specifies both CPU affinity policy (e.g. (<vcpu cpuset="1-10,^7,^8">4</vcpu>) and placement == "auto" the specified CPU affinity will be overridden. Only QEMU/KVM drivers support it now. See docs update in patch for more details. |
||
|---|---|---|
| .. | ||
| all_parameters.xml | ||
| disk_snapshot.xml | ||
| full_domain.xml | ||
| metadata.xml | ||
| noparent.xml | ||
| noparent_nodescription.xml | ||
| noparent_nodescription_noactive.xml | ||