From: Rob Landley <rob@landley.net>
Reply-To: rob@landley.net
To: Linus Torvalds <torvalds@osdl.org>, bill davidsen <davidsen@tmr.com>
Subject: Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt
Date: Fri, 7 Nov 2003 03:13:53 -0600
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On Thursday 06 November 2003 13:45, Linus Torvalds wrote:
> On 6 Nov 2003, bill davidsen wrote:
> > I'm not sure what you mean by faster, burning runs at device limited
> > speed in CPU time in the  less than 1% range if you remember to enable
> > DMA. The last time I looked DMA didn't work in either kernel if write
> > size was not a multiple of 1k, (or 2k?) has that changed?
>
> DMA works fine
>
> 	IF YOU DON'T USE IDE-SCSI
>
> Don't use it. Please. There's no point.
>
> It's much more readable to do
>
> 	cdrecord dev=/dev/hdc
>
> than it is to do some stupid "scan SCSI devices" + "dev=0,1,0" or similar
> totally incomprehensible crap that doesn't even work right.
>
> > I'm not sure what you meant by faster, so don't think I'm disagreeing
> > with you.
>
> Faster as in "it uses DMA for everything, so you can actually burn at full
> speed without having to worry about it or sucking up CPU".
>
> 		Linus

Note this still doesn't mean you can scroll large X windows for two or three 
seconds at a time without burning a coaster.

I had high hopes with the new scheduler, but no.  (Maybe if I niced the heck 
out of cdrecord...)

Rob
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