Re: [RFC PATCH V2 0/8] Packed ring for vhost

[Jason Wang]

On 2018å03æ27æ 03:01, Konrad Rzeszutek Wilk wrote:
> On Mon, Mar 26, 2018 at 11:38:45AM +0800, Jason Wang wrote:
> > Hi all:
> >
> > This RFC implement packed ring layout. The code were tested with pmd
> > implement by Jens at
> > http://dpdk.org/ml/archives/dev/2018-January/089417.html. Minor change
> > was needed for pmd codes to kick virtqueue since it assumes a busy
> > polling backend.
> >
> > Test were done between localhost and guest. Testpmd (rxonly) in guest
> > reports 2.4Mpps. Testpmd (txonly) repots about 2.1Mpps.
> And how does it compare to older ring layout?

No obvious difference.

Vhost itself becomes a bottleneck. I plan to do more aggressive batching 
like dpdk on top.

Thanks