On 7/29/07, Rene Herman <[email protected]> wrote:
> On 07/29/2007 07:19 PM, Ray Lee wrote:
> For me, it is generally the case yes. We are still discussing this in the
> context of desktop machines and their problems with being slow as things
> have been swapped out and generally I expect a desktop to have plenty of
> swap which it's not regularly going to fillup significantly since then the
> machine's unworkably slow as a desktop anyway.
<Shrug> Well, that doesn't match my systems. My laptop has 400MB in swap:
ray@phoenix:~$ free
total used free shared buffers cached
Mem: 894208 883920 10288 0 3044 163224
-/+ buffers/cache: 717652 176556
Swap: 1116476 393132 723344
> > And once there's something already in swap, you now have a packing
> > problem when you want to swap something else out.
>
> Once we're crammed, it gets to be a different situation yes. As far as I'm
> concerned that's for another thread though. I'm spending too much time on
> LKML as it is...
No, it's not even when crammed. It's just when there are holes.
mm/swapfile.c does try to cluster things, but doesn't work too hard at
it as we don't want to spend all our time looking for a perfect fit
that may not exist.
Ray
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