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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--17pEHd4RhPHOinZp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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-FREE= MEM Cheers, Matthew --=20 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 --17pEHd4RhPHOinZp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (FreeBSD) iD8DBQFBIhHZiD657aJF7eIRAiWHAJ41sPZ3vTj7LkdUeu0uC2yrAPxYvgCeNmKL y2dKsZtsG75ZfuWE/CRwFQI= =UfHB -----END PGP SIGNATURE----- --17pEHd4RhPHOinZp--
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