Date: Tue, 17 Aug 2004 15:10:33 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Mipam <mipam@ibb.net> Cc: freebsd-questions@freebsd.org Subject: Re: memory usage question Message-ID: <20040817141033.GA89945@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <Pine.BSO.4.56.0408171524510.1777@ux11.ltcm.net> References: <Pine.BSO.4.56.0408171524510.1777@ux11.ltcm.net>
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On Tue, Aug 17, 2004 at 03:39:40PM +0200, Mipam wrote:
> I have a question about usage of memory.
> Despite the well documented articles about it some things are still
> unclear. In top we see memory devided in several items:
Try this article, buy the guy who wrote some very large chunks of the
VM system:
http://www.daemonnews.org/200001/freebsd_vm.html
As for the meaning of the different labels top(1) shows attached to
memory sizes: those indicate a sequence of memory caches for different
age levels of pages. Note that the system doesn't overwrite cached
pages on a timed basis, but rather picks the oldest unused memory to
recycle as and when some other application requests it. Stuff can
stay in the memory caches for a very long time on a quiet system.
http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/misc.html#TOP-FREEMEM
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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