On Tue, 2009-01-27 at 10:05 +, Daniel P. Berrange wrote:
> On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
> > It's nearly five months since kvm-74 - the first KVM release with this
> > feature - was released. Up until now, we've not added libvirt support
> > because there is
On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
> IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
> large (i.e. GSO) packets and packets with partial checksums. Setting
> the flag means that every packet is proceeded by the same header which
> virtio uses to comm
Hi Rich,
On Mon, 2009-01-26 at 11:39 +, Richard W.M. Jones wrote:
> On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
> > IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
> > large (i.e. GSO) packets and packets with partial checksums. Setting
> > the flag mean
On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
> IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
> large (i.e. GSO) packets and packets with partial checksums. Setting
> the flag means that every packet is proceeded by the same header which
> virtio uses to comm
IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
large (i.e. GSO) packets and packets with partial checksums. Setting
the flag means that every packet is proceeded by the same header which
virtio uses to communicate GSO/csum metadata.
By enabling this flag on the tap fds we creat
On Wed, Aug 13, 2008 at 04:14:10PM +0100, Mark McLoughlin wrote:
> On Wed, 2008-08-13 at 16:01 +0100, Daniel P. Berrange wrote:
> > On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
> > > By enabling this flag on the tap fds we create, we greatly increase
> > > the achievable through
On Wed, 2008-08-13 at 15:53 +0100, Mark McLoughlin wrote:
> +net->model && !strcmp(net->model, "virtio"))
Should be:
+net->model && STREQ(net-model, "virtio"))
Cheers,
Mark.
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On Wed, 2008-08-13 at 16:01 +0100, Daniel P. Berrange wrote:
> On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
> > By enabling this flag on the tap fds we create, we greatly increase
> > the achievable throughput with virtio_net.
> >
> > However, we need to be careful to only set
On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
> By enabling this flag on the tap fds we create, we greatly increase
> the achievable throughput with virtio_net.
>
> However, we need to be careful to only set the flag when a) KVM has
> support for this ABI and b) the value of the
Hey,
Here's a patch that allows libvirt created guests to use KVM's recent
GSO support in order to increase the throughput achieved with virtio_net
network interfaces.
We shouldn't apply this yet - we need the kernel and kvm TUNGETIFF
patches to be applied first - so this is just intended as an R
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