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Re: [PATCH] TCP Offload (TOE) - Chelsio

From:  Jeff Garzik <jgarzik-AT-pobox.com>
To:  Christoph Lameter <christoph-AT-lameter.com>
Subject:  Re: [PATCH] TCP Offload (TOE) - Chelsio
Date:  Thu, 18 Aug 2005 23:56:30 -0400
Cc:  "David S. Miller" <davem-AT-davemloft.net>, timur.tabi-AT-ammasso.com, sbardone-AT-chelsio.com, netdev-AT-vger.kernel.org, opentoe-AT-chelsio.com

Christoph Lameter wrote:
> On Thu, 18 Aug 2005, David S. Miller wrote:
> 
> 
>>And once again it will be "niche", and very far from commodity.
>>A specialized optimization for a very small and specialized audience,
>>ie. not appropriate for Linux upstream.
> 
> 
> The TOE method will gradually become standard simply because it allows 
> performance that cannot be obtained now with existing hardware. And we 
> may be at some speed boundary for the hardware given the limitations on 
> clock frequency.

False.

Each TOE implementation is locked in time by the speed of the NIC. 
Given time, the network stack will -exceed- the speed of today's TOE NICs.

You can see this with 100mbps TOE NICs, which are slower than today's 
software net stack, with today's software net stack being more 
featureful at the same time.

	Jeff



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