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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!solace!nntp.se.dataphone.net!nntp.uio.no!newsfeeds.sol.net!mr.net!nntp.earthlink.net!usenet From: fastbit@earthlink.net Newsgroups: comp.unix.sco.misc,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: Thu, 13 Mar 1997 00:34:01 -0800 Organization: Earthlink Network, Inc. Lines: 21 Message-ID: <3327BBF9.784A@earthlink.net> References: <331BB7DD.28EC@net5.net> <331E7AFE.54DC@earthlink.net> <5g5bb9$ft$1@kayrad.ziplink.net> <5g6rr5$jgo@REX.RE.uokhsc.edu> <5g76gb$6c6@flea.best.net> NNTP-Posting-Host: cust67.max2.san-francisco.ca.ms.uu.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0Gold (Win16; I) Xref: euryale.cc.adfa.oz.au comp.unix.sco.misc:36507 comp.unix.bsd.freebsd.misc:36960 comp.unix.bsd.bsdi.misc:6302 comp.sys.sgi.misc:29068 Matt Dillon wrote: > > * Modern single-cpu boxes running modern operating systems (p.s. NT is > not considered a modern operating system) are more then sufficient > to handle modern day I/O loads. Our newsreader box, with 256MB > of ram and 250 reader processes and the disks going like hell, > have cpu's (pentium pro 200's) that are 80% idle. 80 fucking percent! > > What this means is that a single-cpu platform can generally saturate > whatever I/O you throw at it and still have plenty of suds left over. > Matt, I don't understand your analysis here. If the CPU is idle and the disks are going like crazy, it's not that the CPU is too fast -- it's the I/O that's too slow. What you want to do is to match the I/O to the CPU -- make the I/O fast enough to keep the CPU busy. That translates into more web-pages or email messages processed per unit of time. That's the whole point of the O200 cc-NUMA architecture, hello ...