netdev - Re: [RFC] kvm tools: Implement multiple VQ for virtio-net

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Date:	Mon, 14 Nov 2011 15:05:07 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Asias He <asias.hejun@...il.com>,
	Sasha Levin <levinsasha928@...il.com>, kvm@...r.kernel.org,
	mingo@...e.hu, gorcunov@...il.com,
	Krishna Kumar <krkumar2@...ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [RFC] kvm tools: Implement multiple VQ for virtio-net

On Mon, Nov 14, 2011 at 02:25:17PM +0200, Pekka Enberg wrote:
> On Mon, Nov 14, 2011 at 4:04 AM, Asias He <asias.hejun@...il.com> wrote:
> > Why both the bandwidth and latency performance are dropping so dramatically
> > with multiple VQ?
> 
> What's the expected benefit from multiple VQs

Heh, the original patchset didn't mention this :) It really should.
They are supposed to speed up networking for high smp guests.

> i.e. why are doing the patches Sasha?

-- 
MST
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