Re: swap and 2.4.20

[Marcelo Tosatti]

On Sun, 5 Oct 2003, Maciej Zenczykowski wrote:

> > I remember Linus ranting about swap at one point, but it's been a while.
> > 
> > What is the current state of the need for swap on a linux kernel, 2.4.20 in 
> > specific. Does it need *any*, given some reasonable amount of RAM? What 
> > constitutes a reasonable of RAM?
> > 
> > My recent experience suggest none is needed.
> 
> I have a different - slightly academic - question.  Is it possible to turn
> off swapping? (not turn off swap)  Ie. to prevent the kernel from
> unloading paged-in read-only executables?  I realise this is a tough
> question with mmap being used for many other things besides executables...

No. Paged-in clean pages might be removed from memory at any time and
reread upon access.


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