[Xorp-users] Multicore scalability

[Jaime Nebrera]

  Hi,

> Well, XORP is control plane software. 

  Those are the magic words I was looking for :) Any improvement we do
in the forwarding plane will be exploitable by XORP itself.

> All software forwarding planes have similar limitations, the hardware 
> solution is usually some form of TCAM (ternary content-addressable 
> memory). Various platforms (e.g. in Juniper, Cisco, other vendor space) 
> have more or less TCAM.  It is worth bearing in mind which use case of 
> the router you are optimizing for -- routers in the Default-Free Zone 
> have quite different performance requirements from edge routers or MPLS 
> nodes.

  I'm aware of that.

  In software first comes CPU (now solved with RSS), then RAM latency
(seems improved with Nehalem and AMD), next FSB, etc etc

  I have been reading many articles from academic and Intel and well, at
least things are now better than a couple of years back.

  Still, as you remind, most problems are related to memory management.

  Kind regards

-- 
Jaime Nebrera - jnebrera at eneotecnologia.com
Consultor TI - ENEO Tecnologia SL
Pol. PISA - C/ Manufactura 6, P1, 3B
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