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DateMon, 18 Apr 2005 08:35:07 +0300
FromAvi Kivity <>
SubjectRe: More performance for the TCP stack by using additional hardware chip on NIC
David S. Miller wrote:

>On Sun, 17 Apr 2005 13:29:14 +0300
>Avi Kivity <avi@argo.co.il> wrote:
>
> 
>
>>TOEs can remove the data copy on receive. In some applications (notably
>>storage), where the application does not touch most of the data, this is
>>a significant advantage that cannot be achieved in a software-only
>>solution.
>> 
>>
>
>You don't need to offload the TCP stack to make this case get
>zero-copy behavior.
> 
>
yes, Willy Tarreau outlined how buffering on the nic and splitting the 
dma can achieve zero copy.

are there any adapters out there which work this way?

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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