Re: scaling linux-based router hardware recommendations

["Paul S." <contact () winterei se>]

That's the problem though.

Everyone has presentations for the most part, very few actual tools that 
end users can just use exist.

On 1/28/2015 午後 08:02, Robert Bays wrote:
> > On Jan 27, 2015, at 8:31 AM, Jim Shankland <nanog () shankland org> wrote:
> >
> > My expertise, such as it ever was, is a bit stale at this point, and my
> > figures might be a little off. But I think the general principle
> > applies: think about the minimum number of x86 instructions, and the
> > minimum number of main memory accesses, to inspect a packet header, do a
> > routing table lookup, and enqueue the packet on an outbound interface. I
> > can't see that ever getting reduced to the point where a generic server
> > can handle 40-byte packets at line rate (for that matter, "line rate" is
> > increasing a lot faster than "speed of generic server" these days).
> Using DPDK it’s possible to do everything stated and achieve 10Gbps line rate at 64byte packets on multiple interfaces 
> simultaneously.  Add ACLs to the test setup and you can reach significant portions of 10Gbps at 64byte packets and full 
> line rate at 128bytes.
>
> Check out Venky Venkatesan’s presentation at the last DPDK Summit for interesting information on pps/CPU cycles and 
> some of the things that can be done to optimize forwarding in a generic processor environment.
>
> http://www.slideshare.net/jstleger/6-dpdk-summit-2014-intel-presentation-venky-venkatesan