> > Unfortunately, because of the absurd way in which the Windows VMM
> > allocates memory, the more physical RAM you have, the more swap you
> > must add. (About 1.5x physical RAM is a typical value for the minimum
> > pagefile size.) Having less swap than physical memory is very bad
> > because Windows wants to allocate a page of swap for every page of
> > physical memory which gets allocated. If you've got 2048MB RAM and
> > 128MB swap, it'll start complaining bitterly as soon as your memory
> > usage exceeds 128MB.

> Actually Linux does this too. IIRC the recommended setting is 2x RAM
> for swap on linux. :)

no, this is not true! your linux will behave a lot more consistent 
(compared to windows) when you only supply 2MB of swap - or even no swap.
the recommendation is just a rule of thumb, supplying more does not make 
much sense, because your machine will swap for ages if you really use the 
space. supplying less than 2xRAM is not as painful as with windows.

ok, even linux swaps out unuses memory pages occasionally, but they are 
still mapped, until it is really needed to remap the pages.

pro:
- preemptive swapout is done in idle condition
- when RAM gets tight, some of the swapping is already done

con:
- memory+swap may show more than 100% of allocated memory

good byte

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