Re: page fault scalability patch final : i386 tested, x86_64 support added

[William Lee Irwin III]

Matthew Wilcox <willy@xxxxxxxxxx> wrote:
>> Sure, but the same kind of app can also do this on 32-bit architectures.
>> Assuming there's only 2.5GB of address space available per process,
>> you'd need 1638 cooperating processes to do it.  OK, that's a lot but
>> the lowest limit I can spy on a quick poll of multiuser boxes I have a
>> login on is 3064.  Most are above 10,000 (poll sample includes Debian,
>> RHAS and Fedora).

On Wed, Sep 01, 2004 at 11:19:11AM -0700, Andrew Morton wrote:
> It requires 32GB's worth of pte's.
> So yeah, it might be possible on a 64GB ia32 box.

This only requires approximately 10922.666666666666 processes, which
has surprisingly been done in practice.


-- wli
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