linux-kernel - Re: [PATCH] virtio_net: free transmit skbs in a timer

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Message-Id: <200805160925.18087.rusty@rustcorp.com.au>
Date:	Fri, 16 May 2008 09:25:17 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Avi Kivity <avi@...ranet.com>
Cc:	Mark McLoughlin <markmc@...hat.com>,
	Anthony Liguori <aliguori@...ibm.com>,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH] virtio_net: free transmit skbs in a timer

On Friday 16 May 2008 01:32:47 Avi Kivity wrote:
> Mark McLoughlin wrote:
> > I think Rusty is speaking from the POV of the guest driver - i.e. that
> > virtio_net should never disable notifications on the xmit queue using
> > disable_cb()?
> >
> > Sounds like you think agree, but that the host side should throttle the
> > rate of xmit notifications?
>
> Yes.

But performance is going to suck in the meantime, as currently our host 
doesn't do this.

Rusty.
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