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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!inferno.mpx.com.au!nsw1.news.telstra.net!news.telstra.net!news-out.internetmci.com!newsfeed.internetmci.com!tezcat!cam-news-hub1.bbnplanet.com!news.bbnplanet.com!news.maxwell.syr.edu!EU.net!Germany.EU.net!Dortmund.Germany.EU.net!interface-business.de!usenet From: j@ida.interface-business.de (J Wunsch) 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: 25 Mar 1997 17:41:12 GMT Organization: interface business GmbH, Dresden Lines: 35 Message-ID: <5h92no$gua@innocence.interface-business.de> References: <331BB7DD.28EC@net5.net> <5g76gb$6c6@flea.best.net> <3327BBF9.784A@earthlink.net> <5g9jad$bo3@flea.best.net> <5glbkq$io6$3@kayrad.ziplink.net> <5gn615$9cu@flea.best.net> Reply-To: joerg_wunsch@interface-business.de (Joerg Wunsch) NNTP-Posting-Host: ida.interface-business.de X-Newsreader: knews 0.9.6 X-Phone: +49-351-31809-14 X-Fax: +49-351-3361187 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Xref: euryale.cc.adfa.oz.au comp.unix.sco.misc:37448 comp.unix.bsd.freebsd.misc:37850 comp.unix.bsd.bsdi.misc:6476 comp.sys.sgi.misc:29442 dillon@flea.best.net (Matt Dillon) wrote: > A disk configuration is a disk configuration no matter what > platform you are running on. Memory capacity is memory > capacity.. the memory requirements for a particular program are > about the same no matter what platform you run it on. Actually not, but rather the other way round than Ziplink would expect. :) I had to give a training course about DEC Unix system administration lately. DEC Unix wasn't a bad experience, i have to admit, in particular if someone comes from a BSD background. It has a very consistent documentation, i basically learnt the admin tasks within a couple of days. And they even have implemented some neat BSD features like ``ps alx'', including the VSZ vs. RSS figures that are sorely missing in the SysV ps command once you know about them. Anyway, i noticed that from a cursory view, most of the smaller processes have been ranging at a VSZ of 1 MB ... 2 MB. Almost none of them were below 1 MB. Now compare this to a typical FreeBSD ps output you have in mind, and you'll quickly notice that this is about two or even three times larger on DEC Unix, roughly. This is nothing surprising, if you know that a RISC CPU needs two CPU instructions in order to load a single address, and that all addresses are 64-bit there, that you have more wasted space by padding etc. But it simply shows that the memory requirements of the same task on an Alpha CPU are very likely to be higher than they were on a 32-bit CISC CPU. -- J"org Wunsch Unix support engineer joerg_wunsch@interface-business.de http://www.interface-business.de/~j