slow hard disk
Andy Green
fedora at warmcat.com
Sun Nov 16 10:40:18 UTC 2003
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Sunday 16 November 2003 00:25, Christophe Le Guern wrote:
> > >if someone have the solution, I'm very interested.
> >
> > no, sorry :-(
Just a thought -- I have an old noname 200MHz Pentium (2?) laptop here with a
2.5" drive which started exhibiting the same behaviour on RH9 some months
ago. The cause turned out to be the drive's interpretation of setting the
spindown timer (for power conservation) to 0... it allocated itself zero time
to be spun up before it wanted to spin down. Each access it would spin up
fully, make the access and then start spinning down, on the next access it
would take a deadtime after spinup before the drive was ready to make the
access. Result: drive operated at 1/20th of its normal speed, but it
operated. You couldn't necessarily hear the drive spinning up and down since
it may not have spent any real time losing velocity, its the post spinup
deadtime that does the damage.
On my drive it would become happy towards the end of the boot process, when
hdparm got executed, I assumed.
Check out the hdparm settings for the drive power management/spindown
settings, there's also some flag that makes the setting sticky at the drive
between powerdowns.
- -Andy
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)
iD8DBQE/t1QSjKeDCxMJCTIRAnqiAJ41Uom65pHMMgRXLuJjgVNJr9+EeACdF56W
zICni+Uxv78Poewovp27to8=
=6j3f
-----END PGP SIGNATURE-----
More information about the fedora-list
mailing list