Re: [PATCH net-next v3 0/3] Multiqueue support in virtio-net

From: David Miller
Date: Fri Dec 07 2012 - 15:35:51 EST

From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Sat, 8 Dec 2012 01:04:54 +0800

> This series is an update version (hope the final version) of multiqueue
> (VIRTIO_NET_F_MQ) support in virtio-net driver. All previous comments were
> addressed, the work were based on Krishna Kumar's work to let virtio-net use
> multiple rx/tx queues to do the packets reception and transmission. Performance
> test show the aggregate latency were increased greately but may get some
> regression in small packet transmission. Due to this, multiqueue were disabled
> by default. If user want to benefit form the multiqueue, ethtool -L could be
> used to enable the feature.
> Please review and comments.
> A protype implementation of qemu-kvm support could by found in
> git:// To start a guest with two queues, you
> could specify the queues parameters to both tap and virtio-net like:
> ./qemu-kvm -netdev tap,queues=2,... -device virtio-net-pci,queues=2,...
> then enable the multiqueue through ethtool by:
> ethtool -L eth0 combined 2

It seems like most, if not all, of the feedback given for this series
has been addressed by Jason.

Can I get some ACKs?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at