Subject: Re: Power Management and IOflush???
To: Frederick Bruckman <>
From: Feico Dillema <>
List: current-users
Date: 03/28/2000 18:42:09
On Tue, Mar 28, 2000 at 10:33:03AM -0600, Frederick Bruckman wrote:
> On Tue, 28 Mar 2000, Feico Dillema wrote:
> > I have been running -current on my laptop for a while and have noticed
> > that since the softdep code entered NetBSD the disk of my laptop
> > doesn't decently spin down anymore to save me some battery (it does
> > spin down but never for long). About every 30 seconds there's
> > diskaccess taking place, even if the system is idle and even when it
> > is in single user mode. Is the ioflush thread responsible for this?
> > And if so, is this a bug or a feature (that hopefully can be
> > configured away somehow)?
> Kill "update", and set update=NO in /etc/rc.conf.

I killed `update' a long time ago. Note that I see this behaviour even
in *single-user* mode with basically no other user-process running
than the root `sh'. So, the suspiciouns in the direction of the kernel
threads is rather strong I think.