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Article #4058Re: Memory management on AIX
From: Lars Heidieker
Date: Wed, 31 Mar 2004 09:14
Date: Wed, 31 Mar 2004 09:14
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2154 bytes
It's a guess. Probably AIX does not show the total virtual size in vsz. It might just show the executables text data bss and stack "segments" but not later mapped objects (libaries files etc) Thats what happens in NetBSD and OpenBSD with the same effect vsz < rss and yes that's strange to me too. I think I have read once it's the same with AIX. (For NetBSD and OpenBSD thats not totally true as sbrk syscall increase/decrease the vsz size but not file mappings by mmap) Lars Pascal Perrot wrote: > Hi, > I am doing some performance analysis on machines running AIX and I > discovers something "strange" for me: > How could you explain a RESident set size greater than the VIRtual set > size for a specific process??? > > Thanks for your help > Pascal
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f8c9b,a3772666274316d6 X-Google-Attributes: gidf8c9b,public X-Google-Thread: 115614,a3772666274316d6 X-Google-Attributes: gid115614,public X-Google-Thread: 10650a,a3772666274316d6 X-Google-Attributes: gid10650a,public X-Google-Thread: 110f2c,a3772666274316d6 X-Google-Attributes: gid110f2c,public X-Google-Thread: 1020c6,a3772666274316d6 X-Google-Attributes: gid1020c6,public X-Google-ArrivalTime: 2004-03-31 01:16:12 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed00.sul.t-online.de!newsmm00.sul.t-online.de!t-online.de!news.t-online.com!not-for-mail From: Lars Heidieker <lars.heidieker@uni-bielefeld.de> Newsgroups: comp.unix.admin,comp.unix.aix,comp.unix.internals,comp.unix.questions,fr.comp.os.unix Subject: Re: Memory management on AIX Followup-To: comp.unix.admin Date: Wed, 31 Mar 2004 11:14:32 +0200 Organization: T-Online Lines: 26 Message-ID: <c4e269$171$06$1@news.t-online.com> References: <c2ju04$2qe$1@public.stna.aviation-civile.gouv.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit X-Trace: news.t-online.com 1080724490 06 1249 5sUoGIuOqhxzDvy 040331 09:14:50 X-Complaints-To: usenet-abuse@t-online.de X-ID: JTdQHcZEgeXtfb-NZYxo9DMfzUzk-Z68KTvtBwJaYeKi2xFZ8IhsZM User-Agent: KNode/0.7.7