On 7/8/08, Robert Watson <[EMAIL PROTECTED]> wrote: > There were some patches floating around for if_em to do a prefetch of the > first bit of packet data on packets before handing them up the stack. My
I found Andre Oppermann's optimization patch mentioned in july 2005 status report: http://lists.freebsd.org/pipermail/freebsd-announce/2005-July/001012.html http://www.nrg4u.com/freebsd/tcp_reass+prefetch-20041216.patch Is that the patch you had in mind? In the report Andre says: "Use [of prefetch] in both of these places show a very significant performance gain but not yet fully quantified." "very significant" bit looks promising. Unfortunately, it does not look like prefetch changes in the patch made it into official kernel. I wonder why. It should be easy enough to apply prefetch-related changes and see if/how it affects forwarding performance. --Artem _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
