lkml.org 
[lkml]   [2009]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] Virtual Machine Device Queues(VMDq) support on KVM
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.


\
 
 \ /
  Last update: 2009-09-21 18:25    [W:0.057 / U:0.800 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site