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Date:      Mon, 10 Dec 2001 02:34:21 +0100
From:      "Anthony Atkielski" <anthony@freebie.atkielski.com>
To:        "FreeBSD Questions" <freebsd-questions@freebsd.org>
Subject:   Diminishing free memory in top
Message-ID:  <00ac01c1811a$cb534790$0a00000a@atkielski.com>

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I note when running top that the "Free" memory figure gradually diminishes
over time on the system, even (and perhaps especially) when the system is
idle.  Am I correct in assuming that this means that many pages are not
necessarily active but still contain potentially useful information and thus
have not been freed by FreeBSD because the memory is not yet needed for
anything else?  This seems to be what I understand from the descriptions of
FreeBSD memory management in the handbook, and it is supported by the fact
that the free figure jumps to something much larger if I run a program that
abruptly requests a lot of memory.

This system has 1 GB and apparently has never used the 800 MB swap file, so
I know it's not swapping or paging anything out.


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