Memory, swap, and limits
Mikkel L. Ellertson
mikkel at infinity-ltd.com
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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