Date: Tue, 26 Oct 1999 15:53:50 +0200 (CEST) From: Konrad Heuer <kheuer@gwdu60.gwdg.de> To: J McKitrick <jcm@dogma.freebsd-uk.eu.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: technical question about process loading Message-ID: <Pine.BSF.4.05.9910261543340.73879-100000@gwdu60.gwdg.de> In-Reply-To: <Pine.BSF.4.02A.9910261328430.75309-100000@dogma.freebsd-uk.eu.org>
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On Tue, 26 Oct 1999, J McKitrick wrote: > I don't know if this question belongs here or not, but i'll give it a > shot. If i'm in the wrong place, let me know and i'll re-post elsewhere. >=20 > I just read something very interesting about Linux program execution, and > i was wondering how FBSD compares in this respect. >=20 > "The loading of a binary file into physical memory is not performed by th= e > binary loader under Linux. Rather, the pages of the binary file are > mapped into regions of virtual memory. Only when the program tries to > access a given page will a page fault result in the loading of that page > into physical memory." >=20 > Does FBSD have a similar mechanism? If not, what advantages/disadvantage= s > does FBSD have? The Linux method seems interesting and quite > efficient. Yes, FreeBSD does this in a similar way; a keyword often found for this is `demand paging' which was already introduced in 3BSD for the VAX architecture about 1980 (as far as I know). Regards // // Konrad Heuer ____ ___ _____= __=20 // Gesellschaft f=FCr wissenschaftliche / __/______ ___ / _ )/ __= / _ \ // Datenverarbeitung mbH G=D6ttingen / _// __/ -_) -_) _ |\ \/= // / // Am Fa=DFberg, D-37077 G=D6ttingen /_/ /_/ \__/\__/____/___= /____/=20 // Deutschland (Germany) ----- The Power to Serve ----= - // http://www.freebsd.org // kheuer@gwdu60.gwdg.de // To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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