Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.Hawaii.Edu!news.uoregon.edu!hunter.premier.net!cancer.vividnet.com!news.wildstar.net!news.ececs.uc.edu!news.kei.com!newsfeed.internetmci.com!howland.erols.net!EU.net!usenet2.news.uk.psi.net!uknet!usenet1.news.uk.psi.net!uknet!dispatch.news.demon.net!demon!awfulhak.demon.co.uk!awfulhak.demon.co.uk!awfulhak.demon.co.uk!not-for-mail From: brian@awfulhak.demon.co.uk (Brian Somers) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: dual cpu stuff... Date: 27 Aug 1996 14:45:37 +0100 Organization: Coverform Ltd. Lines: 28 Message-ID: <4vuu61$gt@anorak.coverform.lan> References: <4vcsn4$7ql@cantina.clinet.fi> <4veq47$cc@anorak.coverform.lan> <321E66A0.7FAD4C40@lambert.org> NNTP-Posting-Host: localhost.coverform.lan X-NNTP-Posting-Host: awfulhak.demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Terry Lambert (terry@lambert.org) wrote: : Brian Somers wrote: : [ ... ] : ] FreeBSDs performance (as far as I know, but I'm not talking : ] "authoritively") may give close to 100% improvement - but it : ] really depends on your application. : In your dreams! : My measured performance with a grossly incompetent scheduler : hack was only about 60% using a parallel make for a system : build as my benchmark. Hmmm, from what I've seen in the past, compiling tends to be *very* bus-bound rather than cpu-bound - I've compiled stuff on a 486DX4/75 and had roughly the same performance as a 486SX/25 ... *but* that was running under DOS :( If this is also true under FreeBSD (why wouldn't it be?), this would explain your lack of improvement - after all, not much about a compiler is in kernel land (after the file's been read and before the object's written). -- Brian <brian@awfulhak.demon.co.uk> Don't _EVER_ lose your sense of humour....