[Xorp-users] Fwd: Using GPU to do packet forwarding

[Ben Greear]

Not really related to xorp, but these guys are getting massive
routing throughput on commodity hardware!


-------- Original Message --------
Subject: Using GPU to do packet forwarding
Date: Tue, 24 Aug 2010 15:15:07 -0700
From: Stephen Hemminger <shemminger at vyatta.com>
Organization: Vyatta
To: David Miller <davem at davemloft.net>, Eric Dumazet <dada1 at cosmosbay.com>,        netdev at vger.kernel.org

Interesting paper:
   http://www.ndsl.kaist.edu/~kyoungsoo/papers/packetshader.pdf
One section of general consideration is the expense of the current
skb scheme. At 10G, they measure 60% of the CPU is used doing skb
alloc/free; see paper for the alternative of using a huge
packet buffer.  Also, they managed to shrink skb to 8 bytes!

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