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  2. RPG400-L
  3. October 2002

Re: Array efficiency (was:Dynamic Arrays)

On Wed, 16 Oct 2002, Booth Martin wrote:

> Question: The AS/400 uses single-level storage which, as I understand it,
> decides where to put stuff.  Stuff is paged in and out off disk memory
> regularly and often which is why an AS/400 can have so many devices attached
> and still operate efficiently.  An array would be stored on disk too, just
> like any other paging activity.

An array that is stored on disk is sign of a system that is not operating
efficiently (unless the array is consuming hundreds of megabytes).
Hopefully things other than disk accesses are not paged in and out of RAM
too often.  If they are, you have more problems than just wondering
whether or not you should use an array.

James Rich

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