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Date:      Tue, 31 Oct 2006 19:39:12 +0100
From:      Nejc Skoberne <nejc@skoberne.net>
To:        freebsd-questions@freebsd.org
Cc:        Marko Kobal <marko.kobal@arctur.si>
Subject:   Memory information relations
Message-ID:  <45479850.3080408@skoberne.net>

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Hi,

I would like to know what are exact relations between these 3 memory
information printouts:

top:

 Mem: 157M Active, 127M Inact, 60M Wired, 25M Cache, 60M Buf, 125M Free
 Swap: 998M Total, 998M Free

sysctl -a | grep Mem:

 Virtual Memory:         (Total: 78781K, Active 798692K)
 Real Memory:            (Total: 497676K Active 174300K)
 Shared Virtual Memory:  (Total: 28884K Active: 22684K)
 Shared Real Memory:     (Total: 13768K Active: 10812K)

sysctl -a | grep mem:

 hw.physmem: 527667200
 hw.usermem: 453668864
 hw.realmem: 536608768

So I would like to understand exactly which number is the sum of other
numbers here.

I have already read this paper: http://www.absolutebsd.com/AbsoluteBSD18.pdf
but still I don't even know exact relations between the numbers in "top" printout.

Thanks,
Nejc

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