Re: [dpdk-dev] [ovs-dev] OVS with DPDK Meetup notes

["Traynor, Kevin" <kevin.traynor@intel.com>]

> -----Original Message-----
> From: Flavio Leitner [mailto:fbl@sysclose.org]
> Sent: Monday, November 30, 2015 11:51 PM
> To: Traynor, Kevin
> Cc: dev@openvswitch.org; users@dpdk.org
> Subject: Re: [ovs-dev] OVS with DPDK Meetup notes
> 
> On Thu, Nov 26, 2015 at 05:56:08PM +0000, Traynor, Kevin wrote:
> > Hi All,
> >
> > Just wanted to post some summary notes on the recent OVS with DPDK Meetup
> we
> > had after the OVS conference. Thanks to everyone for the often lively
> discussion.
> > I've collated and condensed Maryam's notes (Thank you Maryam) with my own.
> > Corrections and additions are welcome.
> 
> Thanks for having organized the event and for the good notes.
> 
> 
> > Usability
> > ==========
> > * Single binary for OVS/OVS with DPDK and static vs. dynamic linking
> >   - Discussion around deployment and what the best model is.
> >   - Flavio has posted a mail on this
> >    http://openvswitch.org/pipermail/dev/2015-November/062599.html
> 
> Let us know if you find a performance difference between static vs
> dynamic linking.  We might be able to accommodate both options in
> the same spec, but it seems we should go with shared linking only
> to keep it simple for now.
> 

Yes, will do. I seem to recall from when we looked at this on a previous
project it was a few hundred kpps but it was a long time ago, so I'm not
certain how many.

> 
> > Features
> > ========
> > * Multiqueue vhost-user
> >   - Looks really promising - will help us scale out performance to the VM.
> 
> I see that vhost PMD is moving and if it gets accepted, it would
> be a nice clean up for OVS.  Do you know if there is someone working
> on this already?

I agree, it should simplify the code a lot. Ciara reviewed it and did a
quick integration to see if the api would work. The patch was churning quite
a bit, so we decided to hold off doing any more work with it for the time being.

> 
> > * dpdkr/ivshmem
> >   - Still useful. Check/Update documentation to ensure limitations are
> clear.
> 
> Yeah, same thing here.
> 
> Thanks,
> fbl