Re: Hard disk access causes high CPU load
On Sat, 20 Apr 2002 14:49:15 +0200
Balazs Javor <jb3@freemail.hu> wrote:
> How can I find out whether the hard disks in my Woody box
> are using the best possible DMA mode (or any DMA at all)?
This command will check the throughput of your hardisk {hd?}:
/sbin/hdparm -Tt /dev/hd?
This command will check if you have DMA enabled at all:
/sbin/hdparm -d /dev/hd?
If you don't have the command, install the "hdparm" package. With (U)DMA
you should get at least 10MB+/sec on a 20GB disk. I'm getting 30MB/sec
on a brain-damaged 60GB disk.
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