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Date: Wed, 16 Mar 2005 15:07:54 +0200
From: Giorgos Keramidas <keramida@ceid.upatras.gr>
To: "Colin J. Raven" <colin@kenmore.kozy-kabin.nl>
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cc: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
cc: freebsd-questions@freebsd.org
Subject: Re: Illogical usage of swap
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On 2005-03-16 14:02, "Colin J. Raven" <colin@kenmore.kozy-kabin.nl> wrote:
>On Mar 16 at 14:54, Giorgos Keramidas asked:
>>>Free memory (or the lack thereof) isn't the issue though.
>>>
>>>The issue is this:
>>>Swap: 8192M Total, 116K Used, 8192M Free
>>>and that's the piece of the puzzle that has us all utterly baffled.
>>>
>>>No way in creation this box should be swapping.
>>
>>Do you, by any chance, have vm.swap_idle_enabled set to 1?
>
> No, it isn't:
> gonzo# sysctl -a |grep vm.swap_idle_enabled
> vm.swap_idle_enabled: 0

Strange.  AFAIK, processes are not swapped out to disk unless there is a
severe memory shortage.  The usual case is to have them "paged" out,
which is a bit different.