Date: Fri, 29 Mar 1996 01:23:52 -0500 (EST) From: "John S. Dyson" <toor@freefall.freebsd.org> To: ejs@bfd.com (Eric J. Schwertfeger) Cc: questions@freebsd.org Subject: Re: Triton EIDE interface support Message-ID: <199603290624.BAA10516@localhost> In-Reply-To: <Pine.BSF.3.91.960328082139.1971D-100000@harlie.bfd.com> from "Eric J. Schwertfeger" at Mar 28, 96 08:50:22 am
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> I'm currently running 2.1R on a triton based motherboard. I'm in the
> process of converting over from Linux on this machine, and I was
> curious. In linux, using hdparm, I can enable multi-sector transfers and
> 32 bit transfers on my primary hard drive, which considerably increases
> the drives performance (I'm not running the 1.3.X tree yet, so I don't
> know what effect the triton DMA interface would have on the feel of the
> system).
>
On FreeBSD, you need to enable multi-sector transfers as referred to in the
config file. I am NOT running the DMA interface (FreeBSD doesn't support
it yet), however with a WD Caviar WDC3600, I have typically gotten
5MBytes/sec (plus or minus) on the faster tracks on the drive.
This is an excerpt from a posting that I made a week or so ago:
Machine: ASUS P5-166 motherboard, triton, 40MBytes, 512K Pipeline Burst.
FASTEST PART OF THE DISK:
File './Bonnie.212', size: 104857600
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
-------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
100 3837 70.6 5260 24.7 1782 9.6 4600 68.1 5482 17.4 92.7 3.8
John
dyson@freebsd.org
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