[ovs-discuss] 100G with OvS

[Shivaram Mysore]

Thanks for sharing.  Yes - I have heard of some folks using Mellanox
cards.  But, I was more curious about use of Intel FM10000 series - FM10420
and FM10840 chipset which Silicom and I think Lanner also has these cards
with OVS.

Thanks

On Fri, Nov 2, 2018 at 4:35 AM <adamv0025 at netconsultings.com> wrote:

> Thank you very much for the slides,
>
> Hmm the presentation doesn’t actually have much detail on why the upper
> bound is ~30G (I guess per port), well with 6 cores anyways, using the slow
> x86 path.
>
>
>
> So is the point you’re trying to make that above 40G per port one needs to
> enter the realm of “smart” NICs please
>
> If true then I’d be interested in how do these differ from the say
> P4/Tofino like chips.
>
> I guess that’s the realm where I’d be limited in terms of available OVS
> features to only those for which a HW acceleration is available on the NIC
> –is that assumption correct please?
>
>
>
> adam
>
>
>
> netconsultings.com
>
> ::carrier-class solutions for the telecommunications industry::
>
>
>
> *From:* Joel Wirāmu Pauling [mailto:joel at aenertia.net]
> *Sent:* Friday, November 02, 2018 9:40 AM
> *To:* adamv0025 at netconsultings.com
> *Cc:* Shivaram Mysore; ovs-discuss at openvswitch.org
> *Subject:* Re: [ovs-discuss] 100G with OvS
>
>
>
> Have a look at :
>
>
>
> https://m.youtube.com/watch?v=MglrK-JTiqc
>
>
>
> Disclaimer I worked for Nuage at the time that was done, and work for
> Redhat now.
>
>
>
>
>
>
>
> On Fri, 2 Nov 2018, 22:23 <adamv0025 at netconsultings.com wrote:
>
> > bounces at openvswitch.org] On Behalf Of Joel Wiramu Pauling
> > Sent: Thursday, November 01, 2018 10:29 PM
> >
> > Currently - doing slow-path through commodity x86 silicon you are pretty
> > much capped at 40gbit; so beyond a few use cases where you are say
> > writting to an NVME array directly within minimal CPU interaction 100G to
> > nodes is relatively limited. I've read several relatively good analysis
> which
> > indicate that we are close to physical limits when we hit around 130Gbit
> with
> > Ethernet ; but currently 40Gbit through existing x86_64 architectures is
> about
> > spot on.
> >
> Hi Joel,
>
> Thank you very much for the info,
>
> I assume this limit is per physical NIC is that the case please?
> (I'm wondering if I'd get a ~100Gbps worth of throughput (100G in + 100G
> out) through the system as a whole -i.e. multiple interfaces, essentially
> turning it into an OVS-router.
>
> Would you please share what is the limiting factor?
> (just found that PCIe 3.0 x16 should be capped at 126.075Gbps usable BW;
> DDR3-2133 @ ~136.5Gbps and Intel® Xeon® Processor E5 Family it's 372.8
> Gbps)
>
> Thakn you very much
>
> adam
>
> netconsultings.com
> ::carrier-class solutions for the telecommunications industry::
>
>
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