danial_thom at yahoo.com
Thu Jun 23 07:39:57 PDT 2005
--- Matthew Dillon <dillon at xxxxxxxxxxxxxxxxxxxx>
> :> Hi.
> :> I'm running an AMD64. And was wondering if
> :> there is any thing that I
> :> can do, at the moment, that can take
> :> of the processor.
> :> Really looking forward to the port, hope
> :> soon :)
> :> I saw the amd64 dir in /usr/src and was just
> :> wondering what can be
> :> doen with it. Also in the handbook the
> :> tag amd64 is mentioned.
> :> Tried it but it failed. Obviously something
> :> missing.
> :> Any ideas or information? I did google but
> :> didn't come up with anything.
> :Don't get too excited. An AMD64 build has much
> :higher kernel/networking latencies in freeBSD
> :than a 32 bit build, so its not a slam dunk to
> AMD64 support is going to require a
> concerted effort and isn't
> going to happen until at least the
> journaling and a good chunk of
> the BGL work is done. It might not happen
> until next year the way
> things are going.
> I don't know why the AMD64 build would be
> slower in FreeBSD 5.x.
> It should be about the same speed with
> regards to network latencies.
If the larger, 64-bit structures cause things
that would normally be in the cache to fall out
it could account for it. I haven't seen any
benchmarks that show otherwise.
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