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Date:      Sun, 3 Nov 1996 15:20:11 +0600
From:      Tim Pierce <>
Subject:   vmstat output: does avm+fre=total?
Message-ID:  <>

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I'm a little puzzled by the output of vmstat.  I have 8MB of core
and 16MB swap, so by my reckoning I have 24000 pages of virtual
memory at my disposal.  (Right?  Wrong?)

Running vmstat on a mostly idle system on a recent day gave me avm
counts ranging from 20,000 to 4,000, with the fre list staying
relatively constant at 700-800.  When the system is heavily
loaded, the avm count has gotten as high as 30,000.

What's the deal?  Shouldn't avm+fre approximately equal the total
amount of VM on the system?  Neither the man page nor the Nemeth
book has helped shed much light on this.  I'd appreciate any


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