Memory, swap, and limits

Mikkel L. Ellertson mikkel at
Wed Jun 18 16:06:33 UTC 2008

Beartooth Sciurivore wrote:
> 	OK; but then there's something else I don't know, or don't 
> understand. Does a Fedora machine do any swapping while it has memory 
> left? I didn't think I had (or needed) any control at all over swapping, 
> beyond choosing how much space to afford it.
What I have seen is that when the system needs memory, it will swap 
out idle programs, and it will leave them swapped out until they are 
needed again. (This is a somewhat simplified explanation...) It will 
even use freed memory for thing like disk cache instead of swapping 
the programs back in.


   Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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