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From: mfriedel@slate.mines.colorado.edu (Friedel Michael)
Newsgroups: comp.sys.next,comp.arch
Subject: Lost pages in swapfile ?
Keywords: NeXT, swapfile
Message-ID: <1991Apr15.153504.39750@slate.mines.colorado.edu>
Date: 15 Apr 91 15:35:04 GMT
Sender: mfriedel@slate.mines.colorado.edu (Friedel Michael)
Organization: Colorado School of Mines
Lines: 30

After I boot my NeXTstation I typed vm_stat which is supposed to list
the status of the virtual memory. Here is the result:

Mach Virtual Memory Statistics: (page size of 8192 bytes)
Pages free:                       62.
Pages active:                    263.
Pages inactive:                  970.
Pages wired down:                133.
"Translation faults":           9249.
Pages copy-on-write:            1970.
Pages zero filled:               954.
Pages reactivated:              3767.
Pageins:                         792.
Pageouts:                         77.
Object cache: 953 hits of 1116 lookups (85% hit rate)

My system is 12meg (of which 11 meg are available, 1meg is reserved
by the system at boot time for buffers, so it tells me).
The swapfile has a size of 20971520 bytes after the machine is done
booting. Now no matter how I twist my math, I can't come up with 
enough pages that justify a 20meg swapfile.
So does anyone know to do the correct math, does vm_stat list incorrect
statistics or does the system just forget about a few pages ?

 
-- 
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
No user serviceable part inside. Warranty void if opened
modified or tampered with. No batteries included.
*