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From: cracauer@wavehh.hanse.de (Martin Cracauer)
Subject: Re: SCSI PCI host adapter
Message-ID: <1995Aug29.125909.28500@wavehh.hanse.de>
Organization: The Internet
References: <418r3m$9c6@trauma.rn.com> <419963$hst@gate.sinica.edu.tw> <41eadg$1ajc@news.mindspring.com> <41rqk7$2oj@mailhub.hcl.com> <41sjek$rtu@bonnie.tcd-dresden.de>
Date: Tue, 29 Aug 95 12:59:09 GMT
Lines: 45
Xref: euryale.cc.adfa.oz.au comp.periphs.scsi:36130 comp.os.linux.hardware:14035 comp.unix.bsd.freebsd.misc:4988 comp.os.linux.setup:17934
j@bonnie.heep.sax.de (J Wunsch) writes:
>Rudy Amid <rudy@hcl.com> wrote:
>> How does the NCR controller compares to the Adaptec AHA2940 PCI controller?
>>The price difference is one, but what about performance?
>I remember some figures that claimed the AHA2940 could get about 20 %
>more than the NCR.
Definitivly not here. Here are "bonnie" results:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
knight/100MHzPent/asus-ncr/barra2/FreeBSD-2.0.5-RELEASE
140 1543 98.6 5150 40.3 1711 16.5 1808 98.6 5211 26.8 98.1 7.1
140 1542 98.7 5158 40.1 1717 16.5 1809 98.9 5209 26.9 96.5 7.0
140 1534 98.8 5156 40.4 1717 16.6 1802 98.4 5156 26.7 97.4 7.1
knight/100MHzPent/aha2940/barra2/FreeBSD-2.0.5-RELEASE
140 1584 98.9 3138 20.5 1707 19.3 1850 98.8 5209 25.3 97.6 6.1
140 1586 98.8 3147 20.8 1708 19.5 1852 98.6 5209 25.6 97.7 6.1
140 1584 98.7 3146 20.8 1714 19.5 1852 98.5 5154 25.3 96.2 6.1
knight/100MHzPent/asus-ncr/barra2/NetBSD-current-19950620
140 1594 99.4 2879 17.5 991 11.1 1802 99.1 4534 29.4 87.6 6.4
140 1593 99.4 2887 17.8 993 11.1 1803 99.0 4579 29.1 87.1 6.2
140 1590 99.4 2889 17.8 989 11.2 1806 99.1 4540 29.5 87.4 6.3
"knight" is a 100 MHz-Asus-Triton, 32 MB, the Disk is a Seagate
Barracouda 2 GB. The test ran on the same system, only reboot to
change hardware or OS.
While I'm writing: I had termination problems with several NCR
controller. The ASUS SC-200 was the only reliable I found.
I like the Adaptec because of it's setup menue. I don't trust the NCR
BIOS as much as the Adaptec software, but once the system is running
that shouldn't matter.
--
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@wavehh.hanse.de>. No NeXTMail, please.
Norderstedt/Hamburg, Germany. Fax +49 40 522 85 36. This is a
private address. At (netless) work programming in data analysis.