From: William Lee Irwin III <wli@holomorphy.com>
To: linux-mm@kvack.org
Subject: preliminary report on pagetable occupation rates
Date: Thu, 18 Jul 2002 18:17:09 -0700 [thread overview]
Message-ID: <20020719011709.GD1022@holomorphy.com> (raw)
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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reply other threads:[~2002-07-19 1:17 UTC|newest]
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