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Date:      Tue, 16 Mar 1999 15:07:15 +0100
From:      Sascha Schumann <sas@schell.de>
To:        freebsd-chat@freebsd.org
Subject:   RE: FreeBSD 3.1 SMP outperforms SuSE 6.0 SMP by factor 2.3 !!!
Message-ID:  <19990316150715.A3316@schell.de>

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On Mon, Mar 15, 1999 at 05:13:20PM +1030, Greg Lehey wrote:
> I tend to agree.  I could accept the statement "Linux SMP gives less 
> performance than FreeBSD SMP".  I can`t accept the statement "Linux 
> SMP gives no performance improvement".

Well, I could accept it, if it would be technically correct. But Mr Klemm's
claims are simply invalid. I probably do not need to reiterate on that fact.

Alternatively, I will claim that Linux is 1200% faster, since I can calculate
DES keys at a rate of 10M/sec on my Linux box (Alpha PC164UX, 633MHz) and only
0.8M/sec on my FreeBSD box (Intel Pentium, 166MHz) (yes, it is non sense).

> The first thing that came into
> my mind was "he must have made a mistake".  Other possibilities are
> that make -j doesn`t work right on Linux, or that Linux SMP doesn`t
> even the load as well as FreeBSD does (for example, some MP systems
> put all children in the same CPU).

Linux distributes the load across the various CPUs. If you want to know which
system scales better for your needs, test it directly with your application.
Do not rely on someone who does not even tell you how he produced his results.

-- 

          Regards,

                            Sascha Schumann | 
                                 Consultant | finger sas@schell.de
                                            | for PGP public key


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