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Re: noflushd: making/having drives spin down.

On Tue, 6 Jan 2004, Micha Feigin wrote:

> On Mon, Jan 05, 2004 at 01:36:48PM -0800, Mike Mestnik wrote:
> > I have a dell8900 and I can't seam to get the drive to spin down on 2.6.0-test9.  The drive makes
> > a noticeable whine that can be heard across the room.  I'd like the noise to go away, that is more
> > important than saving battery power for me.
> >
> > I'm using noflushd but it has no effect, I also tried hdtune.
> >
> Look at the -M option of hdparm:
> -M   get/set acoustic management (0-254, 128: quiet, 254: fast) (EXPERIMENTAL)

That'll do no good.

-M just makes seeks slower. The OP is complaining about the constant whine
of the HD spinning. I would agree with him - my I4000 is really quite
disturbingly loud -- in a room full of computers.

noflushd is the best solution, as long as you don't use journalling
filesystems - although there is currently work in that area (seek google
for "laptop-mode" kernel patches)

Having said that, noflushd induces a bug in the kernel that is a killer
for me - threads become zombied after 43 minutes, eventually filling the
process table:

(gee, that mailing list has a lot of spam)

TimC -- http://astronomy.swin.edu.au/staff/tconnors/
The Klein-Gordon equation was derived by Schroedinger.
Hence its name. -- Peter Robinson, Rel. Quant. Mech Lecturer.

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