12.3. 启动 RT-KVM 实例

在 overcloud 上创建 RT-KVM 类别：

$ openstack flavor create r1.small --id 99 --ram 4096 --disk 20 --vcpus 4
$ openstack flavor set --property hw:cpu_policy=dedicated 99
$ openstack flavor set --property hw:cpu_realtime=yes 99
$ openstack flavor set --property hw:mem_page_size=1GB 99
$ openstack flavor set --property hw:cpu_realtime_mask="^0-1" 99
$ openstack flavor set --property hw:cpu_emulator_threads=isolate 99

启动 RT-KVM 实例：

$ openstack server create  --image <rhel> --flavor r1.small --nic net-id=<dpdk-net> test-rt

要验证实例是否使用分配的仿真程序线程，请运行以下命令：

$ virsh dumpxml <instance-id> | grep vcpu -A1
<vcpu placement='static'>4</vcpu>
<cputune>
  <vcpupin vcpu='0' cpuset='1'/>
  <vcpupin vcpu='1' cpuset='3'/>
  <vcpupin vcpu='2' cpuset='5'/>
  <vcpupin vcpu='3' cpuset='7'/>
  <emulatorpin cpuset='0-1'/>
  <vcpusched vcpus='2-3' scheduler='fifo'
  priority='1'/>
</cputune>