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SubjectRe: Swapped out truly zero pages & big scientific calculations

mingo wrote:
> This minipatch is for making statistics about how many truly zero
> content (but otherwise totally private mapped) pages are swapped
> out in the system. As it has to check for every page swapped out
> wether it's zero or not, it slows down swapping ... it's really
> just for making statistics.

I like this, I'll try and get some stats on my box.
I believe it's not going to slow down paging out to swap by a
noticable amount, and if a zero page is found it can be added to the
pool of zero pages...


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