On Thu, 2011-01-20 at 19:47 +0200, Michael S. Tsirkin wrote:
> On Thu, Jan 20, 2011 at 08:31:53AM -0800, Sridhar Samudrala wrote:
> > On Thu, 2011-01-20 at 17:35 +0200, Michael S. Tsirkin wrote:
> > > When MSI is off, each interrupt needs to be bounced through the io
> > > thread when it's set/clea
On Thu, 2011-01-20 at 17:35 +0200, Michael S. Tsirkin wrote:
> When MSI is off, each interrupt needs to be bounced through the io
> thread when it's set/cleared, so vhost-net causes more context switches and
> higher CPU utilization than userspace virtio which handles networking in
> the same threa
On Thu, Jan 20, 2011 at 08:31:53AM -0800, Sridhar Samudrala wrote:
> On Thu, 2011-01-20 at 17:35 +0200, Michael S. Tsirkin wrote:
> > When MSI is off, each interrupt needs to be bounced through the io
> > thread when it's set/cleared, so vhost-net causes more context switches and
> > higher CPU uti
On Thu, 2011-01-20 at 17:35 +0200, Michael S. Tsirkin wrote:
> When MSI is off, each interrupt needs to be bounced through the io
> thread when it's set/cleared, so vhost-net causes more context switches and
> higher CPU utilization than userspace virtio which handles networking in
> the same threa
