Re: page table lock patch V15 [0/7]: overview

[Andrew Morton]

Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
>
> So my patches cost about 7% in lmbench fork benchmark.

OK, well that's the sort of thing we need to understand fully.  What sort
of CPU was that on?

Look, -7% on a 2-way versus +700% on a many-way might well be a tradeoff we
agree to take.  But we need to fully understand all the costs and benefits.
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