Article View: comp.bugs.4bsd
Article #284Re: Complexity of reallocating storage (was users command crap)
From: Dan Bernstein
Date: Sat, 02 Feb 1991 07:16
Date: Sat, 02 Feb 1991 07:16
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In article <2886@charon.cwi.nl> dik@cwi.nl (Dik T. Winter) writes: > Ah, but that is the problem. Just as fast comes in flavors. You have CPU > time, real time, IO time and some more. If one of the programs uses more > passes it is not equally fast IO time wise (unless you are using SSD on > a Cray of course). (Moreover, a program doing IO might well block another > program that wants to do IO.) See, you're proving my point. You don't really care about the number of passes; you care about speed (including any effect on the speed of other programs). It's simply not true that any program using more passes must use more time; that's only a rule of thumb. Suppose you're given two programs, one of which uses fewer passes but is twice as slow. Which do you really care about: the number of passes, or the speed? ---Dan
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!julius.cs.uiuc.edu!rpi!uupsi!cmcl2!kramden.acf.nyu.edu!brnstnd From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein) Newsgroups: comp.bugs.4bsd Subject: Re: Complexity of reallocating storage (was users command crap) Message-ID: <15151:Feb207:16:0691@kramden.acf.nyu.edu> Date: 2 Feb 91 07:16:06 GMT References: <21548@yunexus.YorkU.CA> <5883:Feb102:05:4991@kramden.acf.nyu.edu> <2886@charon.cwi.nl> Organization: IR Lines: 17