Celso González wrote: > On Thu, Jul 31, 2003 at 10:59:10PM -0400, Joey Hess wrote: > > Celso Gonzalez wrote: > > > cpudyn controls the speed in Intel SpeedStep, Pentium 4 Mobile, > > > and PowerPC machines with the cpufreq compiled in the kernel. It saves > > > battery, lowers temperature, and can put the computer disks in standby > > > mode if a given period has passed without any I/O operation. It works > > > well even with journaled file systems such as Ext3, XFS, or ReiserFS. > > > > What mechanism is used for keeping the disks spun down? My laptop does > > not need cpu frequency control (it's a crusoe), but I could use > > something without noflushd's limitations. > > The code to spin down disks is taken from hdparm with few changes. > If hdparm works for you cpudyn also will work.
Well that works fine until the filesystem spins the disk back up to write a file. Oh well, not useful then. -- see shy jo
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