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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!ais.net!ameritech.net!uunet!in3.uu.net!202.232.2.100!np1.iij.ad.jp!nf0.iij.ad.jp!nr0.iij.ad.jp!news.iij.ad.jp!news.CET.CO.JP!usenet From: Michael Hancock <michaelh@cet.co.jp> Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.bsdi.misc,comp.sys.sgi.misc Subject: Re: no such thing as a "general user community" Date: Sat, 29 Mar 1997 03:24:22 +0900 Organization: CET Lines: 37 Message-ID: <333C0CD6.6BD6@cet.co.jp> References: <331BB7DD.28EC@net5.net> <5goqrq$5ak$1@news.clinet.fi> <5hd29s$e7t@fido.asd.sgi.com> <5he3pp$8ms$2@kayrad.ziplink.net> <5hfh2l$i13@flea.best.net> <5hfl3n$a3t@fido.asd.sgi.com> NNTP-Posting-Host: a03m.cet.co.jp Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0 (Win95; I) Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:38047 comp.unix.bsd.bsdi.misc:6506 comp.sys.sgi.misc:29524 Larry McVoy wrote: > > Matt Dillon (dillon@flea.best.net) wrote: > : I didn't even notice that :-) A 200 MHz PPro (P6) is over twice as fast > : as a 133 MHz pentium (P5). XFS will still beat out a normally mounted > : ffs filesystem in terms of file creates/deletes though. It will not > : beat out an async-mounted ffs filesystem, however, which means that > : once ordered block I/O is put into FreeBSD, you can kiss goodbye > : to that statistic. File lookups under XFS will be the only thing > : left that it can boast about. This is a significant, but not > : overpowering, feature. > > You don't think that having a log based file system is a win? I happen > to like it a lot. I'm confused by the terminology, log based sounds like log structured. I've heard SGI's LFS described as a logical volume manager, a log journaling fs, and a log based system. I think it's a log journaling system, but what is it? > And comparing some future feature in FreeBSD to a feature that XFS has done > better for 5 years is hardly apples to apples. You think the XFS boys are > sitting on their thumbs? I can assure you they aren't and that they are > on to more interesting problems such as failover, cluster based XFS, etc. > > I'm an old time file system guy, an FFS bigot from way back. In fact, I > got up at Usenix and defended FFS when Margo or whoever was doing the > LFS talk. But let's be fair - XFS is lightyears beyond FFS. Lightyears. Margo's LFS system is a log structured fs. The logs ARE the files. Are you saying this is how XFS works? And regarding the on disk directory, is it implemented using the extendible hashing algorithm? > -- > --- > Larry McVoy lm@sgi.com http://reality.sgi.com/lm (415) 933-1804