[openib-general] Re: TSO and IPoIB performance degradation

Greg Lindahl lindahl at pathscale.com
Thu Apr 27 17:16:29 PDT 2006


On Thu, Apr 27, 2006 at 04:22:40PM -0700, Grant Grundler wrote:

> Anything preventnig such a gateway from routing SDP to ethernet?
> Those gateways obviously will grok IB protocols.
> I'm asking becuase I don't understand/know if there is a real
> barrier to an IB -> ethernet gateway _without_ IPoIB.

I don't know if a SDP to ethernet gateway even exists, but I do know
that it's a lot more work than just an IPoIB to ethernet gateway --
the gateway is going to have to pass all its data through a TCP stack.
So I would expect SDP to ethernet to not run very fast, especially on
a gateway with lots of streams going.

-- greg




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