Mailinglist Archive: opensuse (516 mails)

[Greg Freemyer <greg.freemyer@xxxxxxxxx>]

On Tue, Feb 22, 2011 at 5:20 PM, Fr David Ousley
<davidousley@xxxxxxxxxxx> wrote:
> Friends --
>
> I'm installing Opensuse 11.3 on a new machine.  It has an SSD drive, and two
> RAID 1 (mirrored) hard drives.  I was planning to put the /boot  and /swap
> on the SSD for speed (unless you experts -- which I am not -- tell me that
> that's not a good idea),

I would not put the SSD on swap for "speed".

If you are using swap enough that speed matters, you will wear out
your SSD long before you would otherwise.

ie. Low-end SSD is designed for about 5,000 write cycles per Erase
Block (EB).  High-end for about 100,000 I think.  Wear leveling allows
you to spread that load around to unused EBs, but it will still be a
problem.

If you are hitting swap so much you care about speed, then SSD is a
poor solution.

If you're hitting it hard, either leave it on rotating disk or get more ram.

If you only use swap now and then, but get frustrated that your whole
machine slows down, then maybe.  The trouble is you could start using
swap more and more frequently and not realize it.  Thus you wear out
that expensive SSD for little real value.

Greg
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