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

Andrew Morton
2005-01-12T23:30:33Z

Nick Piggin <nickpiggin@yahoo.com.au> 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.