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Date: Thu, 18 Jul 2002 18:17:09 -0700
From: William Lee Irwin III <wli@holomorphy.com>
Subject: preliminary report on pagetable occupation rates
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I added a statistic PteChainActv counting the number of reverse
mappings performed, as opposed to the number of pte_chains allocated,
as Dave McCracken's optimization defeats space consumption of
pte_chains as a metric of pagetable occupancy.

This was collected during a run of tbench 4096 on a 16 cpu 16GB i386.

The steady state result is:

PageTables:      98564 kB
PteChainTot:      8508 kB
PteChainUsed:     8408 kB
PteChainActv:  1236684

Where this implies an occupancy rate of:

	(1236684*4)/98564 = 50.1881


Cheers,
Bill
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