[paranoia] Improvement of extraction on ATAPI CDROM's

[Wolfgang Weisselberg]

Hi, Alex!

Alex (avolkov79 at mail.ru) wrote 71 lines:

> > So, how fast *are* you ripping?

>  I use  Pentium 200hz with LG*52 CDROM for audio ripping. Ripping of 1 minute
>  of audio disc take me 30 seconds with Atapi driver and 22 seconds with
>  IDE-SCSI hostadapter emulation. Does it good performance?

2x and 2.7x --- yes, that's fairly good for a normal CD-Rom
drive.

>  The reason I ask
>  is because I had SCSI CDROM before and with other program(that worked only
>  with SCSI devices), I ripped 1 minute in about 6 seconds.

Was that, perchance, a Plextor?

>  Therefore I'm
>  interesting to know if is it possible to reach same performance with
>  paranoia on IDE CDROM's.

You may get better performance if you completely drop error
corrections.  These error corrections are however the whole
reason to use cdparanoia: a 'perfect' copy is the aim.  Since
Audio-CDs were never designed to be read by a computer and to
get the copy right is hard work.

Additionally, your drive will do some --- or even a lot --- of
error correction of it's own, so it depends a lot on the CD and
the drive how fast you can rip.  

It has nothing to do with SCSI or IDE itself: even at 10x speed
you can push the data faster over the bus than the drive can read
them --- unless one of the busses itself is blocked or much used
by other devices.

-Wolfgang
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