From: Ed Sweetman <ed.sweetman@wmich.edu>
To: linux-kernel@vger.kernel.org
Cc: Tom Felker <tcfelker@mtco.com>
Subject: Re: Fast DMA CD audio extraction
Date: Sun, 03 Aug 2003 14:46:51 -0400 [thread overview]
Message-ID: <3F2D589B.8000407@wmich.edu> (raw)
In-Reply-To: <3F2D5843.4040105@wmich.edu>
Ed Sweetman wrote:
> Tom Felker wrote:
>
>> Hi,
>>
>> I'm trying to get decent performance (e.g. DMA, not PIO) extracting
>> audio with cdparanoia from an new IDE CD-ROM. The current problem is
>> very slow ripping and very high system CPU time. hdparm reports DMA
>> is on, and reading data is perfectly fast.
>>
>> What kernel versions and patches should I be trying?
>>
>> (Please cc: me, emailing in reply to linux.kernel posts munges threading)
>> Thanks,
>>
Correction, magellon's tree, designated by the -jam extension.
> akpm's kernel trees have the ide-dma patch that enables dma in raw mode.
> Works quite nicely but i'd only use it on really prestine cds. DMA by
> it's nature doesn't give the best error reporting when dealing with raw
> data cds like audio cds. I've never had a problem with it though, even
> on cds with scratches.
>
prev parent reply other threads:[~2003-08-03 18:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-03 17:59 Fast DMA CD audio extraction Tom Felker
2003-08-03 18:45 ` Ed Sweetman
2003-08-03 18:46 ` Ed Sweetman [this message]
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