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Re: swap



On Mon, May 07, 2007 at 01:09:51PM +0200, Michael Dominok wrote:
> Am Montag, den 07.05.2007, 02:53 -0700 schrieb Francesco Pietra:
> > Is it conceivable to add a low-quality 300GB HD (for
> > swap file) to a raid1 system?
> 
> I guess an non-mirrored drive will have a better performance than a
> raid1-ed one but still will slow your system down immensely.
> 
> If getting more RAM isn't possible you could use a solid state disk for
> swapping.

People often suggest that.  But RAM is cheaper than solid state
disks, so it only makes sense if you have physically reached the
maximum amount of memory that the system can have.  At that point
you would have to consider if splitting the task across more systems
will provide better performance than adding swap.

Swapping is incredibly slow in comparison to RAM, even to a solid
state disk.

Cheers,
Andy

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