Date: Thu, 24 Mar 2005 10:18:20 -0500 From: em1897@aol.com To: linicks@gmail.com, hardcodeharry@yahoo.com Cc: freebsd-questions@freebsd.org Subject: Re: AMD64 much slower than i386 on FreeBSD 5.4-pre Message-ID: <8C6FE9BD8BB1AC2-B50-2DF29@mblk-d19.sysops.aol.com> In-Reply-To: <dc9ba044050323180570d7c3d1@mail.gmail.com> References: <20050323163927.94815.qmail@web90210.mail.scd.yahoo.com> <dc9ba044050323180570d7c3d1@mail.gmail.com>
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If you haven't used amd64 then why are you qualified to comment
on the subject? If he's using the same settings for i386 and amd64,
then the results should be balanced. I think the point here is that
the same settings, which are probably the defaults, run a lot
slower on amd64 than i386. And I don't see that you have
any insight to provide.
I hope FreeBSD hasn't become linux; in that it doesnt work
out of the box and you have to selectively kludge it to show
good results in any particular benchmark? Thats what made
FreeBSD good historically. It was just good in general.
-----Original Message-----
From: Nick Pavlica <linicks@gmail.com>
To: Boris Spirialitious <hardcodeharry@yahoo.com>
Cc: freebsd-questions@freebsd.org
Sent: Wed, 23 Mar 2005 19:05:59 -0700
Subject: Re: AMD64 much slower than i386 on FreeBSD 5.4-pre
Hi Boris,
I haven't had an opportunity to work with any AMD64 hardware yet,
but have had good results with 5.4.? on i686. I can relate to your
frustration, but can say that I was able to greatly improve 5.x
performance with some effort. For example I went from a maximum
sustained disk write of 15Mb/s to 90Mb/s on a file server. That said,
to help you get a better response to your question I would suggest
trying these things:
- Document and post your testing procedures and results. This will
allow others to get a much clearer picture of what may be happening.
As I'm sure you know support via e-mail is very difficult because
there is so much information that is missing.
- You may want to try the performance list if you don't get any
answers from this list.
- File a problem report so that the developers are aware of your
situation. I don't think that they spend allot of time on this list.
(http://www.freebsd.org/doc/en_US.ISO8859-1/articles/problem-reports/index.html)
I hope this helps!
--Nick
What optimizations have you done to this point?
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