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

Benjamin C.R. LaHaise writes:
> Since the ip header fits in the cache of some CPUs (like the P4),
> this becoming a cheaper operation than ever before.

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.

David S. Miller
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