If I mount a normal iso9660 cdrom, then copy all of its contents to my
hard drive, it is extremely slow, and bogs down my system if DMA is
not enabled. If I use hdparm -d 1 on the CDRW, the copy then goes
very smoothly and does not cause a performance hit to the computer.
However, using the tools cdparanoia and cdrdao cause the non-DMA
behavior, i.e. CPU usage goes through the roof, the process takes
forever, typing lags, the mouse is jumpy, etc. Also, when the process
is done, hdparm shows that DMA has been turned off for that drive!
Does anyone know why DMA mode is forced off for these tools?
For what it's worth, my system is an Athlon 1 GHz with 512 MB of RAM.
There are only two IDE drives in the system, a Western Digital 1200JB
drive and a Lite-On 48x CDRW. Both drives are connected to their own
channel on a Promise Ultra ATA100 PCI IDE card.
Thanks for any feedback!
Matt
--
Matt Garman, [EMAIL PROTECTED]
``I ain't never seen no whiskey, the blues made my sloppy drunk!''
-- Sleepy John Estes, ``Leaving Trunk''
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