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Date:      Fri, 18 Mar 2005 18:55:14 -0500
From:      em1897@aol.com
To:        freebsd-questions@freebsd.org
Cc:        linicks@gmail.com
Subject:   Re: FreeBSD 4.x Opteron Question
Message-ID:  <8C6FA2D0FF4CB85-BFC-1014C@mblk-r32.sysops.aol.com>
In-Reply-To: <20050318233039.33837.qmail@web90209.mail.scd.yahoo.com>
References:  <20050318233039.33837.qmail@web90209.mail.scd.yahoo.com>

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:Boris,
:  I would agree that my initial impression of 5.3 was that it was slow
:compared to 4.x.  After some tuning, I now have 5.3 running at an
:acceptable performance level.  You may want to start testing the newer
:versions of 5 current.  I have noticed improved performance on my test
:servers and believe that 5.4 will demonstrate an improvement in
:performance.  I know that the guys on the performance list would like
:to get some good feedback if you find any specific bottlenecks with it
:as well.
:
:--Nick

FYI, I recently testing bridging/network performance on 5.4-pre and its
about the same as 5.3: 25 to 30% more CPU load for the same traffic
levels than 4.x. SMP drops packets at about 60% load and seems to
have a lower capacity than UP. I'm sure some things are faster, but
networking is a large component for most people I think.
Threaded network stacks just don't seem to perform well,
certainly not on UP. Linux MP works much better, but
with 2 CPUs it has the capacity of FreeBSD 4.x with 1.
So its hard to justify.

FWIW, its quite a bit better with UP than DragonFLY, but
dragonfly is much better with 2 processors.


On Wed, 16 Mar 2005 14:51:43 -0800 (PST), Boris Spirialitious
<hardcodeharry@yahoo.com> wrote:
>
> --- cyb <cyb.@gmx.net> wrote:
> > http://www.freebsd.org/platforms/amd64.html
> >
> > Looks like you will need to use 5.3-release (or
> > 5.3-stable/5.4-prerelease if you have more than
> > 4GB).
> >
> > Why can you not use 5.3?
>
> 5.3 is too slow, and we have custom code. Why use
> faster hardware just to use slower version of O/S?
> Please don't start with flames. This is what I
> feel.
>
> I don't need so much RAM, so 4.x will work with
> 1 or 2GB of RAM?
>
> Boris
>
> >
> >
> > On Wed, 2005-03-16 at 09:43 -0800, Boris
> > Spirialitious wrote:
> > > --- Boris Spirialitious <hardcodeharry@yahoo.com>
> > > wrote:
> > > > When opteron support start for Freebsd? I have
> > 4.9.
> > > > is supported? Or 4.11 better? I can't use 5.x.
> > > >
> > > > Will a i386 disk boot on opteron system? Can I
> > > > use same disk image for intel and amd MBs? Any
> > > > big problems?
> > > >
> > > > Thanks,
> > > >
> > > > Boris
> > >
> > > Does anyone know answer please? Someone must use
> > > Opteron here
> > >
> > > Boris
> >
> > --
> > GnuPG key  : 0xD25FCC81  |
> > http://cyb.websimplex.de/pubkey.asc
> > Fingerprint: D182 6F22 7EEC DD4C 0F6E  564C 691B
> > 0372 D25F CC81
> >
> >
> >
> >
>
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