Subject: Re: mp->mnt_vnodelist change
To: None <tech-kern@NetBSD.org>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 10/18/2006 20:51:34
On Wed, Oct 18, 2006 at 08:34:46PM +0200, Reinoud Zandijk wrote:
> Normal discs dont mind that but media like CD/DVD *hate* that and due to
> their nature, writing with decending adresses takes around 10 times as much
> time as writing ascending adresses if not more. In fact the current
> implementation is faster in synchronious mount rather than asynchronious
> mount for that reason.
I think this can affect normal disks as well; e.g. hardware RAID controllers
which have heuristics to detect sequencial writes.
Manuel Bouyer <email@example.com>
NetBSD: 26 ans d'experience feront toujours la difference