Re: TCP RDMA option to accelerate NFS, CIFS, SCSI, etc.

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> However, in the case of most storage protocols, you don't want
> the data in the receive buffer. You want it in the buffer cache, so
> there is a copy to the buffer cache.

That assumes you require a copy to move from the network layer to the
buffer/page cache. Is that a warranted assumption. I think not.

> Now, this proposal doesn't fix the interrupt overhead problem. 
> Optimized FC/SCSI NICs have one interrupt/transfer or less.

Interrupt overhead is old hat. Mitigation schemes are well understood

Alan