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Enable vhost-net
2011/11/11 |
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Enable vhost-net to mitigate overheads on virtualiazation environment.
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| [1] | Load vhost-net module on KVM Host. |
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[root@dlp ~]# modprobe vhost_net [root@dlp ~]# vhost_net 25194 0 macvtap 7629 1 vhost_net tun 14146 3 vhost_net |
| [2] | It's Ok all. Virtual Machines start with enabling vhost-net. By default, if vhost-net is loaded, virtual machines start with "vhost=on" automatically like follows. |
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[root@dlp ~]#
[root@dlp ~]# virsh start www # start Domain www started ps -ef | grep vhost qemu 3257 1 29 22:55 ? 00:00:02 /usr/bin/qemu-kvm -S -M pc-0.14 -enable-kvm -m 1024 -smp 2,sockets=2,cores=1,threads=1 -name www -uuid 8f1a7952-1866-9257-cbda-71d23833bad5 -nographic -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/www.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -drive file=/var/kvm/images/www.img,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=23,id=hostnet0, vhost=on ,vhostfd=24 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:bf:0e:e7,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
-usb -device usb-tablet,id=input0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5root 3285 2 0 22:55 ? 00:00:00 [vhost-3257] root 3290 2060 0 22:55 pts/0 00:00:00 grep --color=auto vhost |