Newsgroups: comp.unix.wizards
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From: scl@unislc.uucp (Sean Landis)
Subject: Re: Kernel Definition
References: <1423@necis.UUCP> <1991May23.170918.11612@sequent.com> <4814@skye.ed.ac.uk>
Message-ID: <1991Jun5.162705.3325@unislc.uucp>
Organization: unisys
Date: Wed, 5 Jun 91 16:27:05 GMT

richard@aiai.ed.ac.uk (Richard Tobin) writes:


>Several unix kernels require 1-2 Mbytes.  I haven't seen more than this.
>Thus, the kernel fits into about $50 worth of memory.  

>-- Richard
>-- 
>Richard Tobin,                       JANET: R.Tobin@uk.ac.ed             
>AI Applications Institute,           ARPA:  R.Tobin%uk.ac.ed@nsfnet-relay.ac.uk
>Edinburgh University.                UUCP:  ...!ukc!ed.ac.uk!R.Tobin

Do you mean: size /unix?  I rarely see a unix *image* less than 2.5 Mb.  Of
course, it all depends what you're running and how you tune.  For example,
one the system I use every day, the buffer cache alone is 2.5 Mb.  But my
process load is extremely memory intensive: gnu emacs, X window, LaTeX, etc.

I find that 3-4 Mb is typical.  As an aside, I find that it's not very easy to
determine the exact image of unix.  Anyone have any good ideas on that?

Sean
-- 
Sean C. Landis                | {hpda, sun, uplherc}!unislc!scl
Unisys Open Systems Group     | unislc!scl@cs.utah.edu
320 North 2200 West B2D01     | (801) 594-3988
Salt Lake City, Utah 84116    | (801) 594-3827 Fax