On Wed, Jan 29, 2003 at 09:29:48PM +0000, MJ Ray wrote:
Adam Bower abower@thebowery.co.uk wrote:
I recall that by design ext3 polls the disk every 5 seconds (possibly longer) but not in any way that you could shutdown the disk effectivly for any length of time to actually save power.
Odd. I can't actually find this, although I did find some articles that spoke about improved battery life with some ext3 data= options rather than using other journaled filesystems, and some that spoke of data corruption because of subtle flaws in some laptop harddisks. Where did you see it, can you remember?
ummmm, all I can find now was people fixing it 18 months ago =) http://lwn.net/2001/0913/a/ext3.php3
"Performance: don't force a new transaction every time we sync (should prevent the writes previously happening every 5 seconds, allowing laptop drives to spin down again.)"
It is possible that I am remembering pre-this or possibly that didn't fix all of the problems. Most likely of course is that I am 18 months behind the times =)
Adam