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Date: Fri, 9 Nov 2001 15:53:10 -0700
From: Erik Andersen <andersen@codepoet.org>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Ben Israel <ben@genesis-one.com>, linux-kernel@vger.kernel.org
Subject: Re: Disk Performance
Message-ID: <20011109155309.A14308@codepoet.org>
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On Fri Nov 09, 2001 at 08:31:32PM -0200, Rik van Riel wrote:
> On Fri, 9 Nov 2001, Ben Israel wrote:
> 
> > Why does my 40 Megabyte per second IDE drive, transfer files at best
> > at 1-2 Megabytes per second?
> 
> Sounds like you're not using IDE DMA:
> 
> # hdparm -d1 /dev/hda
> 
> (not enabled by default because it corrupts data with some
> old chipsets and/or disks)

But wouldn't it make more sense to enable DMA by default, except 
for a set of blacklisted chipsets, rather then disabling it for 
everybody just because some older chipsets are crap?

 -Erik

--
Erik B. Andersen             http://codepoet-consulting.com/
--This message was written using 73% post-consumer electrons--
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