On Tue, Jan 06, 2004 at 02:44:01PM +1100, Tim Connors wrote: > 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. >
It makes seeks slower in order to make the hard disk quieter (I think it spins slower). > 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) > I am using laptop mode and its quite good for saving battery power. As for what would prove better for you is a question of your hard disk access habits. laptop-mode (and probably noflushd) delay writes to disk so that it can completely spin down, thus if you only occasionally access the disk for short whiles the -M flag will give you better performance since the hard disk won't have to spin up again each time you access the disk. If you do a lot of short reads then laptop-mode and noflushd will do no good anyway. If you do long reads every once in a while then laptop-mode and noflushd will be a better solution. > 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: > http://sourceforge.net/mailarchive/forum.php?thread_id=2060865&forum_id=4904 > > (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. > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
