> -----Original Message----- > From: John Xiao [mailto:johnxiao.cl...@gmail.com] > Sent: Saturday, December 20, 2014 2:19 AM > To: Traynor, Kevin > Cc: dev@openvswitch.org > Subject: Re: [ovs-dev] OVS DPDK support technical direction > > Thanks Kevin, > > There is a librte_vhost dir in upstream DPDK repo, would that be the > base of DPDK vhost library you are talking about?
Yes, currently it supports vhost-cuse. It will be changed to support vhost-user, there is an RFC patch available at present http://dpdk.org/ml/archives/dev/2014-December/009798.html BTW, could you help > to elaborate what would be exactly included in the library? I don't have any docs on it other than the RFC. You can ask on the DPDK mailing list > > John > > On Fri, Dec 19, 2014 at 11:53 PM, Traynor, Kevin > <kevin.tray...@intel.com> wrote: > > > >> -----Original Message----- > >> From: John Xiao [mailto:johnxiao.cl...@gmail.com] > >> Sent: Thursday, December 18, 2014 2:46 PM > >> To: Traynor, Kevin > >> Subject: Re: [ovs-dev] OVS DPDK support technical direction > >> > >> Hi Kevin, > >> > >> The performance number looks great! > >> - For DPDK OVS, the number only shows NIC - OVS - NIC as vhost-user is > >> not supported yet, do you know what's the schedule for vhost-user > >> support? > > > > Assuming you do mean vhost-user (and not userspace-vhost aka vhost-cuse), > > it is planned to be > integrated into the DPDK vhost library in DPDK 2.0, which is targeted for the > end of March. At that > point we can look at upgrading OVS to support DPDK 2.0 and being able to use > the DPDK vhost library > for vhost-user. > > > >> - On slide #8, it's interesting to see TCP_STREAM degrade quite a lot > >> in offload case. > >> > >> Thanks, > >> Jun > >> > >> On Thu, Dec 18, 2014 at 9:32 PM, Traynor, Kevin <kevin.tray...@intel.com> > >> wrote: > >> > Hi John, > >> > > >> > The path using DPDK through the netdev can use the exact match cache in > >> > dpif-netdev.c to enable > very > >> fast switching. You could think of this as an equivalent to the fast path > >> in OVDK. Have a look at > the > >> rates that Madhu Challa presented at the OVS Fall Conference on Slide 3 > >> http://openvswitch.org/support/ovscon2014/18/1600-ovs_perf.pptx > >> > > >> > Thanks, > >> > Kevin. > >> > > >> >> -----Original Message----- > >> >> From: dev [mailto:dev-boun...@openvswitch.org] On Behalf Of John Xiao > >> >> Sent: Wednesday, December 17, 2014 4:10 AM > >> >> To: dev@openvswitch.org > >> >> Subject: [ovs-dev] OVS DPDK support technical direction > >> >> > >> >> Hi, > >> >> > >> >> As we know that Intel stopped its effort on OVDK and OVS DPDK support > >> >> will all be in OVS upstream, and I have one question after digging > >> >> OVDK and OVS DPDK architecture: > >> >> > >> >> - IMHO, OVS DPDK support can follow the existing "fast/slow path" > >> >> model as being done in OVS linux kernel, i.e. just another fast path > >> >> happening in DPDK threads, and this is pretty much the mechanism used > >> >> by OVDK by extending a new kind of dpif provider. But for upstream OVS > >> >> DPDK support, I can only see netdev extension, I don't know what's the > >> >> reason behind, can anybody post any discussion relevant on this if > >> >> any? Do we see huge benefit when every packet going through "netdev" > >> >> type of data path instead of a fast/slow path fashion? or I missed > >> >> anything obvious? > >> >> > >> >> Thanks, > >> >> John > >> >> _______________________________________________ > >> >> dev mailing list > >> >> dev@openvswitch.org > >> >> http://openvswitch.org/mailman/listinfo/dev _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
