[MPlayer-users] mplayer and preemptible kernel

[Nyk Tarr]

On Tue, Oct 29, 2002 at 11:52:42PM +0100, Jindrich Makovicka wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Jeremy Brenner wrote:
> 
> >[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >
> > 
> >
> >>>From what I read on the linux kernel mailing list, ide-scsi does not
> >>support dma. I suspect it never will as the only things that use it
> >>(programs that need direct access to cd-rom/cd-rw etc. hardware) will
> >>have a new interface to use in the next stable release. Oh, and the new
> >>IDE code (>2.5.somethingorother) can have both ide-cd and ide-scsi
> >>loaded for the same device.
> >>
> >>-- 
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> >>
> >>   
> >>
> >
> >wow... thats great... my cpu usage when burning or ripping at 40x is
> >ludicrous.  I almost payed another 100$ for the scsi version because of
> >this.  Its sad that a windows install would actually perform better
> >burning cds than my gentoo install.
> >
> I just tried hdparm -d 0 & hdparm -d 1 on /dev/cdrom and the CPU usage 
> is 7% with DMA and 70% without.
> Using vanilla 2.4.19, scsi emulation on all CD drives.

Looks like I completely misunderstood. Obviously DMA /is/ relevent...

Sorry.

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