slows to a crawl when hard drive is in use

[davidw@dedasys.com (David N. Welton)]

I never saw an answer for this:

http://lists.debian.org/debian-powerpc/2002/debian-powerpc-200203/msg00202.html

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On Tue, 2002-03-12 at 00:01, Michel Dänzer wrote:
> On Mon, 2002-03-11 at 20:57, David N. Welton wrote: 
> > > > My tibook becomes almost unusable interactively when there is a lot of
> > disk activity (dselect unpackaging things, anacron running the find
> > job).  What's up with this?!
> > First of all, check with hdparm that your HD is set up reasonably. It
> should at least be using DMA and unmasking IRQs.

I see that unmasking IRQs is disabled on my machine (I'm using the
default settings, so only DMA it seems). Is unmasking IRQs dangerous at
any time ? Is it dangerous when having 2 devices on the same IDE channel
(both CD-Rom and HD are on the first channel on this machine) ? And if
it's not dangerous at any time, why isn't it enabled by default ? ;)

"We need some IDE experts here" ;)

Cheers

-- 
/Bastien Nocera
http://hadess.net
----

Thanks,
-- 
David N. Welton
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