Subject: newb: top(1)'s RES column
To: None <email@example.com>
From: Peter Bex <Peter.Bex@student.kun.nl>
Date: 07/01/2004 22:47:08
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Good day to all,
Hate to bother the list with such a newbie question, but searching
the 'net on this turned up nothing.
In my `top' list, I see (among others) this:
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
9 root 10 0 0K 61M apmev 5:20 0.00% 0.00% [apm0]
(the exact same SIZE/RES values for all other system processes)
My question is this: What, exactly, does the RES column display? The
manpages are babbling about resident memory, but that doesn't really
mean anything to me.
If I understood some of the descriptions on the 'net, RES is the memory
the process is actually using, and SIZE the memory reserved for the
process. This sounds odd, since the usage is more than the reserved memory?
Why are all system processes the same size? Why 61 Mb? That sounds
like a lot, and IIRC NetBSD runs on small systems with as little as 16 Mb
Who's got a cluebat for me?
"The process of preparing programs for a digital computer
is especially attractive, not only because it can be economically
and scientifically rewarding, but also because it can be an aesthetic
experience much like composing poetry or music."
-- Donald Knuth
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