Messages in this thread | | | Date | Fri, 21 Feb 2003 11:27:06 -0800 | From | William Lee Irwin III <> | Subject | Re: [Lse-tech] Re: Performance of partial object-based rmap |
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On Fri, Feb 21, 2003 at 02:00:10AM -0800, William Lee Irwin III wrote: >> nr_page_table_pages 689 >> which amounts to 2756KB RAM used for PTE's, demonstrating large > Pagetables are also grossly fragmented. From the same sample: > nr_reverse_maps 156027 > To preempt the FAQ, this is the number of reverse mappings performed, > where one is done for every instantiated non-swap PTE.
ARGH too early in the morning.
$ echo $(( (100*156027.0)/(689*1024) )) 22.11467593432511 percent utilization
or
$ echo $(( 156027.0/689 )) 226.45428156748912
PTE's per pagetable page.
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