Re: why swap at all?

[Nick Piggin]

John Bradford wrote:
> Quote from Nick Piggin <nickpiggin@xxxxxxxxxxxx>:
>
> > Even for systems that don't *need* the extra memory space, swap can
> > actually provide performance improvements by allowing unused memory
> > to be replaced with often-used memory.
>
>
> That's true, but it's not a magical property of swap space - extra physical
> RAM would do more or less the same thing.

Well it is a magical property of swap space, because extra RAM
doesn't allow you to replace unused memory with often used memory.

The theory holds true no matter how much RAM you have. Swap can
improve performance. It can be trivially demonstrated.
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