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Path: sserve!newshost.anu.edu.au!munnari.oz.au!bunyip.cc.uq.oz.au!harbinger.cc.monash.edu.au!yeshua.marcam.com!MathWorks.Com!noc.near.net!news.delphi.com!usenet From: John Dyson <dysonj@delphi.com> Newsgroups: comp.os.386bsd.questions Subject: Re: linux's I/O calls faster than NetBSD's ? Date: Tue, 8 Mar 94 12:16:27 -0500 Organization: Delphi (info@delphi.com email, 800-695-4005 voice) Lines: 14 Message-ID: <JY2Invr.dysonj@delphi.com> References: <2lhv9r$pbt@homea.ensta.fr> NNTP-Posting-Host: delphi.com X-To: Manuel Bouyer <bouyer@bsdtest.ensta.fr> Manuel Bouyer <bouyer@bsdtest.ensta.fr> writes: >We have made some comparaisons between NetBSD 0.9 and Linux, and it appears that >Linux's disk i/o calls are much faster in some case (time gives 4 seconds versus 4 >minutes for a programs which make direct acces writing and reading on a file, on >exactly the same hardware). Would you post your benchmark so we can check it out???? NetBSD does schedule disk I/O when writing fs size blocks. We have been looking at modifying it for FreeBSD, but are concerned about robustness of the file system... (FreeBSD probably does the same thing as NetBSD). John dyson@implode.root.com