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Date:      Wed, 14 Jan 1998 11:59:56 -0500
From:      Lee Cremeans <lee@wakky.dyn.ml.org>
To:        sthaug@nethelp.no
Cc:        hackers@FreeBSD.ORG
Subject:   Re: Any good comparison of Linux/FreeBSD/NetBSD/OpenBSD/Hurd?
Message-ID:  <19980114115956.58321@wakky.dyn.ml.org>
In-Reply-To: <6373.884772923@verdi.nethelp.no>; from sthaug@nethelp.no on Wed, Jan 14, 1998 at 11:15:23AM %2B0100
References:  <6373.884772923@verdi.nethelp.no>

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On Wed, Jan 14, 1998 at 11:15:23AM +0100, sthaug@nethelp.no wrote:
> (Looking at the idle time with vmstat seems to indicate that the EIDE
> drive is *not* using bus mastering - I thought
> 
> ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1
> 
> indicated that bus mastering *would* be used, but evidently not so.)


What are your flags on wdc0 and wdc1? Bit 0x2000 has to be set for each
drive to enable DMA support on that drive. You flags should be something
like 0xa0ffa0ff (which enables all the performance features, including DMA).


-- 
Lee C. -- Manassas, VA, USA  (WakkyMouse on DALnet #watertower)  
A! JW223 YWD+++^ri P&B++ SL+++^i GDF B&M KK--i MD+++i P++ I++++ Did 
$++ E5/10/70/3c/73ac/95/96 H2 PonPippi Ay77 M | hcremean (at) vt.edu
FreeBSD/Linux/Unix hacker...Win95 and M$ evil! (go see www.freebsd.org)
My home page: http://wakky.dyn.ml.org/~lee | finger me for geek code



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