Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.uwa.edu.au!disco.iinet.net.au!wa.news.telstra.net!act.news.telstra.net!psgrain!usenet.eel.ufl.edu!news.mathworks.com!enews.sgi.com!news.sgi.com!news-out.microserve.net!news-in.microserve.net!zdc-e!super.zippo.com!zdc!szdc!szdc-e!news From: John Dyson <dyson@freebsd.org> Newsgroups: comp.unix.bsd.freebsd.misc,comp.os.linux.misc Subject: Re: Benchmarking different Unix Operating Systems Date: Sun, 15 Sep 1996 14:19:50 -0500 Organization: John S. Dyson's home machine Lines: 25 Message-ID: <323C56D6.41C67EA6@freebsd.org> References: <aak2.842008017@Isis.MsState.Edu> <50p41e$1ie@nnrp1.news.primenet.com> <32305b37.590852758@news.intellistar.net> <aak2.842255270@Isis.MsState.Edu> <511pa6$avb@agate.berkeley.edu> <513f4t$ac@anorak.coverform.lan> <323652FA.41C67EA6@freebsd.org> <51gmm2$snk@josie.abo.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0Gold (X11; U; FreeBSD 2.2-CURRENT i386) Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:27401 comp.os.linux.misc:129663 Mats Andtbacka wrote: > > John Dyson, in <323652FA.41C67EA6@freebsd.org>: > [...] > >Also, the FreeBSD that they benchmarked is the "old stuff". Even though > >it isn't suggested -- there are people using FreeBSD-current in > >production, and certain vintages of it are very good (and light > >years beyond 2.1.X.) And as always, FreeBSD is never compiled > >-fomit-frame-pointer or with optimizations over -O out of the box. > > out of interest, why is this thus? i assume it must be a deliberate > policy decision, but what might be its background? > -fomit-frame-pointer messes up stack tracebacks. Greater than or equal to -O2 would be nice, but the compiler reliability becomes progressively more questionable. Sad thing is that -fomit-frame-pointer seems to make alot of difference, but the policy of being able to do full tracebacks overrules this. You can recompile your kernel with better optimization. It does disadvantage FreeBSD in benchmarks, but we would rather make the kernel more useful. In my eyes, quality is not just low level/unloaded speed. John