Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]

[Peter Jeremy]

On 2008-Jul-07 13:25:13 -0700, Julian Elischer <julian at elischer.org> wrote:
>what you need is a speculative prefetch where you an tell teh 
>processor "We will probably need the following address so start 
>getting it while we go do other stuff".

This looks like the PREFETCH instructions that exist in at least amd64
and SPARC.  Unfortunately, their optimal use is very implementation-
dependent and the AMD documentation suggests that incorrect use can
degrade performance.

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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