Return to BSD News archive
Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!paladin.american.edu!zombie.ncsc.mil!news.mathworks.com!newsfeed.internetmci.com!nntp-hub2.barrnet.net!news1.digital.com!decwrl!amd!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com!ix.netcom.com!netcom.com!bugs From: bugs@netcom.com (Mark Hittinger) Subject: Re: INNd for FreeBSD 2.0.5 Message-ID: <bugsDKByBJ.MC6@netcom.com> Organization: NETCOM On-line Communication Services (408 261-4700 guest) References: <Pine.A32.3.91.951226230555.23694A-100000@dsu2.deltast.edu> <4bsee8$sc@parody.tecc.co.uk> <DKA0z6.Jnw@ritz.mordor.com> <4buo8i$3fc@dyson.iquest.net> Date: Fri, 29 Dec 1995 04:11:43 GMT Lines: 22 Sender: bugs@netcom2.netcom.com root@dyson.iquest.net (John S. Dyson) writes: >In article <DKA0z6.Jnw@ritz.mordor.com>, >Chris Mauritz <ritz@ritz.mordor.com> wrote: >>James Raynard (james@parody.tecc.co.uk) wrote: >>: The main 'gotcha' with INN on FreeBSD is that using MMAP is known to cause >>: occasional system crashes due to a bug in the MMAP implementation! However, >>: the performance without MMAP is almost as good as with it, due to the very >>: sophisticated FreeBSD VM system. >We are working the problem!!! Believe me!!! There is a group of people >that are using mmap heavily and it is getting debugged. I second the observation that the merged VM/buffer cache has made the read/mmap issue almost negligible. On Solaris 2.x/x86 the mmap makes a very noticeable performance improvement on the same hardware. On FreeBSD I could not really see any difference in performance. FreeBSD with READ handled things better than Solaris with mmap. Regards, Mark Hittinger Netcom/Dallas bugs@freebsd.netcom.com