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Re: Re: Problem with swap partition

On Mon, Jun 25, 2001 at 13:32:31 -0700, Eugene Lee wrote:

> On Mon, Jun 25, 2001 at 10:44:18AM -0500, Jorge L Lopez wrote:
> :
> : There is a good page about this issue that someone posted on moving swap in
> : MacOS X
> :
> : http://homepage.mac.com/gdif/virtmem.html
> :
> : I think the solution is to make sure your swap partition mounts before you
> : load fstab because the swap file is created before you mount your
> : filesystems herein lies causes the problem.
>
> AFAIK, Darwin does not support a true "swap partition" like other Unix
> flavors do.

True, you get a swap _slice_ in *BSD which is part of a partition that
is inhabited by a number of slices. The problem is, IMHO, that the UFS
implementation of Apple is faulty. I have heard from a large number of
people that they had and have problems using a UFS system partition
[just look up "UFS" in the discussion groups in the Apple support
section on their web server). That means - at least in terms of Mac OS X
(I am still experimenting with Darwin) - that you're stuck with HFS+
which tends to fragment much more than UFS. The solution is a dedicated
swap partition (HFS+ or UFS - I've chosen UFS) which speeds up your
system because your swap file won't get defragmented.

Nick



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