Hard drive power saving

[Shot (Piotr Szotkowski)]

Paul Sladen:

> On Thu, 16 Feb 2006, Shot (Piotr Szotkowski) wrote:

>> my laptop sometimes turning into a mode of 'clicking' its harddrive
>> every five seconds or so[1], but not always?

> This could be Ext3fs writing its journal to disk every 5 seconds.

Hmm, now that I actually timed it, it’s more of a 15 seconds. And not
100% regular, *and* seems to turn on from time to time (but, once on,
seems to stay until reboot/hibernation).

Is there a way to turn off or change the
journaling, to rule out this possibility?

FWIW, `sudo hdparm -B 255 /dev/sda` (the way to turn off the disk
APM suggested on the ThinkWiki) doesn’t seem to affect the clicking.

-- Shot
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