RE: System performance using swap partition vs. swap file

["Mark Knecht" <mknecht controlnet com>]

Rick,
   This goes back to the problem that I was having with the kernel that
ordered the disk controllers differently. If you remember, in one case it
said HDA and in the other case it said HDE.

   For my data partitions I got around the problem by not mounting devices,
like /dev/hda7 or /dev/hde7, but instead using an ext2 label, and then
mounting a label in fstab instead. It works very nicely.

   However, it doesn't work for swap partitions, as far as I know...

   My idea was to make a new ext2 partition, label it as /swap_part and then
mount that in fstab using levels also. The only thing that I'll have on that
partition will be the swap file, so there shouldn't be any issues WRT the
file system doing weird things. Any access to that partition I intend to be
to the swap file.

   Let me know if you think this makes sense, or if it triggers any other
ideas.

   Thanks for the help.

Cheers,
Mark

-----Original Message-----
From: redhat-install-list-admin redhat com
[mailto:redhat-install-list-admin redhat com]On Behalf Of Rick Stevens
Sent: Monday, December 09, 2002 2:52 PM
To: redhat-install-list redhat com
Subject: Re: System performance using swap partition vs. swap file


Mark Knecht wrote:
> Hi,
>    Does anyone have any experience with what the system performance
> issues might be with running a swap file under Linux as opposed to a
> dedicated swap partition?
>
>    I don't actually know that this is an option, but someone asked me
> and I was curious.

Swap partitions are typically faster than swap files, but the
difference is small under most loads.
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens vitalstream com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-         It is better to have loved and lost.  Cheaper, too!        -
----------------------------------------------------------------------



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