Re: storage over IP (was Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1)

[dean gaudet <dean-list-linux-kernel@xxxxxxxxxx>]

On Tue, 9 Jan 2001, David S. Miller wrote:

>    Date: Tue, 9 Jan 2001 18:56:33 -0800 (PST)
>    From: dean gaudet <dean-list-linux-kernel@xxxxxxxxxx>
>
>    is NFS receive single copy today?
>
> With the zerocopy patches, NFS client receive is "single cpu copy" if
> that's what you mean.

yeah sorry, i meant:

- NIC DMAs packet to memory
- CPU reads headers from memory, figures out it's NFS
- CPU copies data bytes from packet image in memory to pagecache

-dean