On Tue, Nov 14, 2006 at 05:05:57PM +0000, Carlo Capocasa wrote:
>
> > echo 'for ((;1;)); do i=0; done;'|nice -n 19 sh
>
> Shazam, dude shazam. The noise is gone.
>
> Together with the ground loop, this thing has been causing me headaches for FOUR
> YEARS. And now it's gone. Thank you.
Somehow this just jogged my memory... have you tried the "nohlt" kernel
boot parameter? Maybe totally irrelevant. I haven't used it since I got
a nice quiet Delta 66, but it used to be mandatory to reduce
video-related noise with my older hardware.
There seem to be several variants depending on architecture...
from /usr/src/linux/Documentation/kernel-parameters.txt:
nohlt [BUGS=ARM]
no-hlt [BUGS=IA-32] Tells the kernel that the hlt
instruction doesn't work correctly and not to
use it.
nohalt [IA-64] Tells the kernel not to use the power
saving function PAL_HALT_LIGHT when idle. This increases
power-consumption. On the positive side, it reduces interrupt wake-up
latency, which may improve performance in certain
environments such as networked servers or real-time systems.
-- Paul Winkler http://www.slinkp.comReceived on Wed Nov 15 00:15:02 2006
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