AMD64 much slower than i386 on FreeBSD 5.4-pre

[Boris Spirialitious]

--- Emanuel Strobl <emanuel.strobl at gmx.net> wrote:
> Am Mittwoch, 23. März 2005 01:19 schrieb Boris
> Spirialitious:
> > -- Emanuel Strobl <emanuel.strobl at gmx.net> wrote:
> >  Am Mittwoch, 23. März 2005 00:38 schrieb Boris
> >
> > > Spirialitious:
> > > > I have opteron 246 system with 2 port intel em
> > > > card. We have test bed with about 200Kbs
> traffic
> > > > and we route through 5.3/i386 system. Load is
> > > > about 50%.  With same settings, amd64 system
> run
> > > > with 85% load. How could be so slow? What
> tuning
> > > > extra is needed for amd64 kernels?
> > >
> > > 200kB/s sounds like misconfigured
> duplex/negotiation
> > > mode.
> > > But why don't you try FreeBSD 5.4-BETA1? Many
> > > performance improvements were
> > > achieved and stability is given in the -STABLE
> > > branch (BETA1 is a relese of
> > > FreeBSD 5-STABLE)
> >
> > I am sorry, I mean 200Mb/s. It is a controlled
> stream
> 
> Unfortunately that's a not so uncommon result with
> em and 5.3. There are 
> tuning methods but they won't give the big kick.
> 
> Like mentioned, try 5.4 (BETA1), depending on your
> employment you'll see 
> tremendous improvement, I don't have values handy
> nor can I confirm that for 
> amd64, but you really wnat to try out, especially if
> this box isn't 
> productive yet, which it isn't if I understood
> correctly.

I am running 5.4-Pre now. Its the same. Everyone
always say try new version, but it always the same.

i compare em to em, only difference is amd64 vs
i386. So amd64 O/S is this much slower than i386?
So why anyone use? Is like nobody know what is
going on with this OS. Before, people tell me
Opteron on i386 no good. But now that I test,
its much better than amd64. Why is there always
excuse with FreeBSD 5? Always try next version.
Always same slow result?

Boris


		
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