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Date:      Wed, 1 Sep 1999 17:03:46 +0200 (MET DST)
From:      Joerg Czeranski <jc@joerch.org>
To:        Chuck Robey <chuckr@picnic.mat.net>, freebsd-alpha@freebsd.org
Subject:   Re: relative alpha speed
Message-ID:  <199909011503.RAA07208@zaphod.in.tu-clausthal.de>
In-Reply-To: <Pine.BSF.4.10.9909011034110.369-100000@picnic.mat.net>

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Chuck Robey wrote:
> I have just begin to compare my dual 333 MHz PII system against my
> PC164SX system.  I haven't any rela confidence yet that I've got the new
> PC164SX correctly set up (particularly, I am not certain about the way I
> have my RAM installed), but in timing and comparing makes of buildworld
> and of the kernel, the 333 MHZ PII seems to be beating the 533MHz Alpha
> by nearly 2:1.

That seems right, for integer stuff my AlphaPC164 500MHz (21164A, yours
is a 21164PC) is ~25% slower than a single PII-400.
Make should scale well to two processors, so the dual-PII should be about
twice as fast as a 533MHz 21164PC.

(N.b.: 21164 is 96/97's technology)

> I did the testing before and after I activated softupdates on the alpha,
> and I was very surprised to note that I saw about a 5 percent slowdown
> when using softupdates.
> 
> Are these experiences what I should have expected, or should I take this
> as clear evidence that I have something misconfigured?

I don't know anything about the FreeBSD specifics.

joerch


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