Re: [UPDATE] zerocopy.. While working on ip.h stuff

["Benjamin C.R. LaHaise" <blah@xxxxxxxxx>]

On Mon, 26 Feb 2001, David S. Miller wrote:

> At gigapacket rates, it becomes an issue.  This guy is talking about
> tinkering with new IP _options_, not just the header.  So even if the
> IP header itself fits totally in a cache line, the options afterwardsd
> likely will not and thus require another cache miss.

Hmmm, one way around this is to have the packet queue store things in
in a linear array of pointers to data areas, then process things in
bursts, ie:

        - find packet data areas for queued packets
        - walk list doing prefetches of ip header and options
        - then actually do the packet processing (save output for later)

That will require a number of new hooks for pipelining operations, though.
Just a thought.

                -ben