I noticed this too. Ultra66 drives need 'Use DMA by default' too, and
without it they do not run to their full potential (or even close 4MB/sec
vs 20MB/sec on my system). So I guess the newbies will either have to
learn to recompile their kernels, or live with the rather poor
performance.
_____
Nick Webb
ITS Lab Software
University of Idaho
http://www.uidaho.edu/~webb3172
On Fri, 9 Jun 2000, Necrotica wrote:
> I don't know if this was by design but...
>
> I just installed Mandrake 7.1 last night. I have an AMD Athlon system based on
> the Viper chipset. I turned on hard drive optimizations during the install and
> when the system booted for the first time it hung hard while trying to turn on
> the optimizations.
>
> After a little snooping I found a small issue with the Mandrake-configured
> kernel. Support for the AMD Viper chipset is turned on, but if you read the
> info, it says "If you say Y here, you also need to say Y to "Use DMA by default
> when available", above. Alas, this was set to no. I set this to yes, recompiled
> the kernel, and everything works great now.
>
> As I said, I dunno if this is by design but I thought I would mention something
> in case it was an oversight.
>
> -Chris
>
