From owner-freebsd-hardware  Tue Jun 10 18:48:04 1997
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Date: Tue, 10 Jun 1997 19:48:11 -0600 (MDT)
From: Doug Russell <drussell@saturn-tech.com>
Reply-To: Doug Russell <drussell@saturn-tech.com>
To: Howard Lew <hlew@www2.shoppersnet.com>
cc: Craig Johnston <craig@gnofn.org>, hardware@FreeBSD.ORG
Subject: Re: poor memory bandwidth on ABIT IT5H rev 1.5
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On Mon, 9 Jun 1997, Howard Lew wrote:

> CPU is AMD K5-PR133
> 
> FIC PT2006 (Intel VX) with 256K PB Cache & FreeBSD-2.1.7.1R
> Got 65MB/s
> 
> FreeTech F63T (Intel VX) with 256K PB Cache & FreeBSD-2.1.7.1R
> Got 62MB/s
> 
> FreeTech F79 (Intel TX) with 512K PB Cache & FreeBSD-3.0SNAP-6/6/97
> Got 43MB/s
> 
> Is there something different about 3.0SNAP6/6/97?  Is there any option
> parameter for the kernel config for the K5-PR133?  Unfortunately, 2
> parameters changed, so I can't tell if it is the MB or the OS.  I decided 
> to go with 3.0snap because of this missing TX PCI & IDE drivers.
> 
> All three tests were done with 32MB EDO memory (set to best memory
> settings). 

All of those seem rather low.  Here's a couple of my home machines.  All
are very stable with their present memory settings:

hobbes:/home/drussell {2} ruptime
586quick166   up 49+19:35,     2 users,  load 1.00, 1.00, 1.00
bedroom       up 49+19:26,     0 users,  load 0.00, 0.00, 0.00
hobbes        up 86+21:32,     4 users,  load 0.51, 0.42, 0.60
hobbes:/home/drussell {3} exit

-----
Gigabyte 486AM/S, AMD 5x86-133 overclocked to 150Mhz (50x3):

hobbes:/home/drussell {1} dd if=/dev/zero of=/dev/null bs=1m count=1000
1000+0 records in
1000+0 records out
1048576000 bytes transferred in 11.257504 secs (93144626 bytes/sec)

That's an old 486 with 16 Megs 60ns FPM, but it works server duty
----
Gigabyte 586VX, Cyrix 6x86-P166 (133 Mhz), 32 Megs EDO

586quick166:/home/drussell {1} dd if=/dev/zero of=/dev/null bs=1m count=1000
dd if=/dev/zero of=/dev/null bs=1m count=1000
1000+0 records in
1000+0 records out
1048576000 bytes transferred in 13.524589 secs (77531080 bytes/sec)
----

Hmm...  The 486 is quicker doing the copy.  hehe.  Are there any speedup
flags/settings for the Cyrix chips?  Ahh, I'll just get a K6.  :)

All are running 2.2-BETA.  (The Cyrix shows up as a 486 under 2.2-BETA.)

Later......						<Doug>