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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!news.unimelb.EDU.AU!munnari.OZ.AU!spool.mu.edu!howland.reston.ans.net!swrinde!elroy.jpl.nasa.gov!news.msfc.nasa.gov!newsfeed.internetmci.com!news.mathworks.com!news2.mathworks.com!newscaster-1.mcast.net!cs.tu-berlin.de!zib-berlin.de!irz401!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Linux vs. FreeBSD ... (FreeBSD extremely mem/swap hungry) Date: 27 May 1996 17:54:43 GMT Organization: Private BSD site, Dresden Lines: 22 Message-ID: <4ocq93$bko@uriah.heep.sax.de> References: <3188C1E2.45AE@onramp.net> <4mnsc5$6qo@sundial.sundial.net> <4mr1pk$cdi@dyson.iquest.net> <4n0dhd$cff@agate.berkeley.edu> <3194622D.41C67EA6@ami-chan.res.cmu.edu> <31A52667.794BDF32@zeus.co.uk> <4o3ftc$4rc@zot.io.org> <31a9c16e.0@kaliban.csoma.elte.hu> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E mingo@kaliban.csoma.elte.hu (Ingo Molnar) wrote: (Terry's ``high speed'' (RAM), ``medium speed'' (swap), and ``low speed'' (file) VM.) > the filesystem is "medium speed" on Linux. You can read/write > files at disk hardware speed under ext2fs (using the proper busmastering > hardware). Well, that's not the question. You can do this with any decent file system, or you could even pick ext2fs under FreeBSD if you don't trust UFS. :) Terry's comment was merely that it takes longer to compute some file offset (due to the required indirection) than to compute a location in the swap space (assuming `raw' swap -- swapping to a file will be slower, of course). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)