Normally I do not care much about desktop - performance, since my servers do not run any gui. But at home I run some older hardware (Pentium) which gets sometimes very sluggish (mouse-movements in KDE). I observe that this is the case where there is some disk-io background activity going on.
How can I set that disk-priority lower, so that my gui gets more attention?
I already tried to set the disk-scheduler for my sata-drive from cfq to as - but that did not help.
I remember that I had - long time ago - a similar problem on OpenSuSE - there I set a different general scheduler tick-rate (shorter as default, as far as I remember). But I do not remember what that was exactly, neither how to set that on my current Linux (CentOS 5, 32-Bit).
Any hints are welcome.