Corin Langosch wrote:
so that basically means i should replace my IDE drive with a SCSI drive, because much of my cpu time is spend for IO-requests? does SATA help here?
No.As Paul said, your CPU is just too bored to do anything else than waiting for IO. You could run something like "while /bin/true; do /bin/true; done" to consume some CPU time and you'll see that the value for wa becomes zero.