[MPlayer-users] mplayer and preemptible kernel

[Jindrich Makovicka]

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.
>>
>>-- 
>>/__
>>\_|\/
>>   /\
>>
>>    
>>
>
>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.

-- 
Jindrich Makovicka