[vorbis] cdparanoia mailing list ?

Segher Boessenkool segher at chello.nl
Fri Mar 15 14:24:32 PST 2002



> But you cant beat the ide cdrom driver for ide
> drives, especially with the DMA transfer patch.  Ripping with dma means
> you use about 2% to negligable cpu to read audio cds.

IDE DMA read is actually _slower_ than IDE PIO mode read, in most cases
(the notable exception being really high system loads).  PIO mode uses
more system time, DMA uses more user time (because of cache loads), and
DMA mode uses more wall clock time in most cases.  PIO mode reads hide
the cache latency in i/o latency.

<p>Segher

<p>--- >8 ----
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