Messages in this thread | | | Date | Mon, 21 Sep 2009 09:21:30 -0700 | From | Stephen Hemminger <> | Subject | Re: [RFC] Virtual Machine Device Queues(VMDq) support on KVM |
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On Mon, 21 Sep 2009 16:37:22 +0930 Rusty Russell <rusty@rustcorp.com.au> wrote:
> > > Actually this framework can apply to traditional network adapters which have > > > just one tx/rx queue pair. And applications using the same user/kernel interface > > > can utilize this framework to send/receive network traffic directly thru a tx/rx > > > queue pair in a network adapter. > > >
More importantly, when virtualizations is used with multi-queue NIC's the virtio-net NIC is a single CPU bottleneck. The virtio-net NIC should preserve the parallelism (lock free) using multiple receive/transmit queues. The number of queues should equal the number of CPUs.
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