UsingVhost - Revision history

Xming at 10:24, 8 March 2011

2011-03-08T10:24:57Z

← Older revision		Revision as of 06:24, 8 March 2011
Line 5:		Line 5:
	=== Obtaining the code ===		=== Obtaining the code ===

	~~you~~ need the at least qemu-kvm-0.13.0 (http://sourceforge.net/projects/kvm/files/qemu-kvm/)		'''You need the at least qemu-kvm-0.13.0''' (http://sourceforge.net/projects/kvm/files/qemu-kvm/)

	=== kernel requirements ===		=== kernel requirements ===

Mjt: formatting

2011-02-24T10:16:23Z

formatting

← Older revision		Revision as of 06:16, 24 February 2011
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	=== example command line ===		=== example command line ===
	To start a guest with vhost:		To start a guest with vhost:
	* ~~/usr/bin/~~kvm -netdev type=tap,id=guest0,script=kvm-ifup,'''vhost=on''' -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..		* kvm -netdev type=tap,id=guest0,script=kvm-ifup,'''vhost=on''' -device virtio-net-pci,netdev=guest0,mac=''ma:c:a:dd:re:ss'' ..''other options''..

	=== Caveats ===		=== Caveats ===
	Some DHCP clients have problems with this implementation, more [http://www.spinics.net/lists/kvm/msg37660.html details here].		Some DHCP clients have problems with this implementation, more [http://www.spinics.net/lists/kvm/msg37660.html details here].

Mjt: show the important option in bold

2011-02-24T10:11:48Z

show the important option in bold

← Older revision		Revision as of 06:11, 24 February 2011
Line 13:		Line 13:
	=== example command line ===		=== example command line ===
	To start a guest with vhost:		To start a guest with vhost:
	* /usr/bin/kvm -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..		* /usr/bin/kvm -netdev type=tap,id=guest0,script=kvm-ifup,'''vhost=on''' -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..

	=== Caveats ===		=== Caveats ===
	Some DHCP clients have problems with this implementation, more [http://www.spinics.net/lists/kvm/msg37660.html details here].		Some DHCP clients have problems with this implementation, more [http://www.spinics.net/lists/kvm/msg37660.html details here].

Xming at 12:41, 13 January 2011

2011-01-13T12:41:37Z

← Older revision		Revision as of 08:41, 13 January 2011
Line 5:		Line 5:
	=== Obtaining the code ===		=== Obtaining the code ===

	* git clone git://~~git~~.~~kernel.org~~/~~pub~~/~~scm~~/~~virt/kvm~~/qemu-kvm~~.git~~		you need the at least qemu-kvm-0.13.0 (http://sourceforge.net/projects/kvm/files/qemu-kvm/)
	* git checkout refs/remotes/origin/~~stable-0.13~~
	* cd kvm
	* compile as usual

	=== kernel requirements ===		=== kernel requirements ===

Xming at 09:36, 20 September 2010

2010-09-20T09:36:19Z

← Older revision		Revision as of 05:36, 20 September 2010
Line 17:		Line 17:
	To start a guest with vhost:		To start a guest with vhost:
	* /usr/bin/kvm -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..		* /usr/bin/kvm -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..

			=== Caveats ===
			Some DHCP clients have problems with this implementation, more [http://www.spinics.net/lists/kvm/msg37660.html details here].

Xming: wrong unit

2010-09-20T08:59:39Z

wrong unit

← Older revision		Revision as of 04:59, 20 September 2010
Line 1:		Line 1:
	As of September 2010, vhost is not included in any released tarballs, so you need the git version.		As of September 2010, vhost is not included in any released tarballs, so you need the git version.

	[[VhostNet]] provides better latency (10% less than e1000 on my system) and greater throughput (8x the normal virtio, around 7~8 ~~Gigabytes~~/sec here) for network.		[[VhostNet]] provides better latency (10% less than e1000 on my system) and greater throughput (8x the normal virtio, around 7~8 Gigabits/sec here) for network.

	=== Obtaining the code ===		=== Obtaining the code ===

Mjt: add a link to vhost page

2010-09-15T13:11:33Z

add a link to vhost page

← Older revision		Revision as of 09:11, 15 September 2010
Line 1:		Line 1:
	As of September 2010, vhost is not included in any released tarballs, so you need the git version.		As of September 2010, vhost is not included in any released tarballs, so you need the git version.

	~~Vhost~~ provides better latency (10% less than e1000 on my system) and greater throughput (8x the normal virtio, around 7~8 Gigabytes/sec here) for network.		[[VhostNet]] provides better latency (10% less than e1000 on my system) and greater throughput (8x the normal virtio, around 7~8 Gigabytes/sec here) for network.

	=== Obtaining the code ===		=== Obtaining the code ===

Mjt: drop irrelevant command-line arguments in the example, to show only net-related ones

2010-09-15T13:07:51Z

drop irrelevant command-line arguments in the example, to show only net-related ones

← Older revision		Revision as of 09:07, 15 September 2010
Line 15:		Line 15:

	=== example command line ===		=== example command line ===
	To start a guest with vhost"		To start a guest with vhost:
	* /usr/bin/kvm ~~-m 1024~~ -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ~~-drive file=/dev/volume01/guest0,if=virtio,boot=on -daemonize~~		* /usr/bin/kvm -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 ..other options..

Xming at 11:43, 15 September 2010

2010-09-15T11:43:31Z

New page

As of September 2010, vhost is not included in any released tarballs, so you need the git version.

Vhost provides better latency (10% less than e1000 on my system) and greater throughput (8x the normal virtio, around 7~8 Gigabytes/sec here) for network.

=== Obtaining the code ===

* git clone git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git
* git checkout refs/remotes/origin/stable-0.13
* cd kvm
* compile as usual

=== kernel requirements ===

On the host you need a kernel with CONFIG_VHOST_NET=y and in the guest you need a kernel with CONFIG_PCI_MSI=y

=== example command line ===
To start a guest with vhost"
* /usr/bin/kvm -m 1024 -netdev type=tap,id=guest0,script=kvm-ifup,vhost=on -device virtio-net-pci,netdev=guest0,mac=00:16:3e:00:00:01 -drive file=/dev/volume01/guest0,if=virtio,boot=on -daemonize