"Balazs" == Balazs Javor <[EMAIL PROTECTED]> writes:
Balazs> Hi, How can I find out whether the hard disks in my Woody
Balazs> box are using the best possible DMA mode (or any DMA at
Balazs> all)?
Balazs> Allthough I have a relativly slow machine (VIA C3 800 +
Balazs> 256MB), I have an ATA100 controller (VIA PL133) and two
Balazs> Seagate Barracuda IVs. So they should be relatively fast
Balazs> and use not much CPU, or shouldn't they?
Yes, and that is a pretty fast machine anyway ;-)
Balazs> But on my 2.4.18 machine it can take ages to transfer
Balazs> large file between them. And while the file transfer takes
Balazs> place the CPU usage is above 90% and XFree becommes
Balazs> _extremely_ sluggish. Even if I try to move the mouse
Balazs> there are stops and a quite large lag...
Balazs> Is this normal, or do I need to set up something
Balazs> differently?
It's not normal, and I'd bet you don't have DMA on.
apt-get install hdparm
hdparm -i /dev/hda
should get you started, along with 'man hdparm.' Also, installing the
'hwtools' package gives you a nice /etc/init.d/hwtools file in which
to do all the hdparm operations at boot up once you know what you
need.
Cheers!
Shyamal
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