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Date:      Wed, 29 May 2013 11:19:32 +0000 (UTC)
From:      jb <jb.1234abcd@gmail.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: "swap" partition leads to instability?
Message-ID:  <loom.20130529T131753-79@post.gmane.org>
References:  <1369558712.96152.YahooMailNeo@web165006.mail.bf1.yahoo.com> <loom.20130526T143506-872@post.gmane.org> <1369644392.92027.YahooMailNeo@web165003.mail.bf1.yahoo.com> <loom.20130527T115233-867@post.gmane.org> <loom.20130528T204022-196@post.gmane.org> <CAH3a3KU%2BZe2SRe0DQVGw=rV1XhCL1z4mZu2Mdv_c_NnAD9pyAw@mail.gmail.com>

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Fred Morcos <fred.morcos <at> gmail.com> writes:

> .. 
> The improvement effect can be
> noticed on large inputs. These algorithms will most probably perform quite
> badly on small inputs.

I think your concern has been addressed in review of various algos where base
case identification helped to avoid overhead cost in small problem sizes
relative to cache.
http://erikdemaine.org/papers/BRICS2002/paper.pdf

In light of available but not implemented better VMM algos, perhaps *BSD and
Linux could eliminate or reduce the need for:
- swap space
- swapping out RAM even if there is no lack of it
- overcommitment of memory (a bluff asking to be punished by OOM killer)
- OOM killer
Besides, they allow sloppy/dangerous programming.

jb





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