Re: [PATCH -mm v2 00/11] mm: scalable and unified arch_get_unmapped_area

[John Stoffel]

>>>>> "Rik" == Rik van Riel <riel@xxxxxxxxxxx> writes:

Rik> A long time ago, we decided to limit the number of VMAs per
Rik> process to 64k. As it turns out, there actually are programs
Rik> using tens of thousands of VMAs.


Rik> Performance

Rik> Testing performance with a benchmark that allocates tens
Rik> of thousands of VMAs, unmaps them and mmaps them some more
Rik> in a loop, shows promising results.

How are the numbers for applications which only map a few VMAs?  Is
there any impact there?

John
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