Messages in this thread | | | Date | Mon, 01 Oct 2012 10:33:12 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 0/3] Virtual huge zero page |
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On 10/01/2012 10:26 AM, Andrea Arcangeli wrote: > >> It is well known that microbenchmarks can be horribly misleading. What >> led to Kirill investigating huge zero page in the first place was the >> fact that some applications/macrobenchmarks benefit, and I think those >> are the right thing to look at. > > The whole point of the two microbenchmarks was to measure the worst > cases for both scenarios and I think that was useful. Real life using > zero pages are going to be somewhere in that range. >
... and I think it would be worthwhile to know which effect dominates (or neither, in which case it doesn't matter).
Overall, I'm okay with either as long as we don't lock down 2 MB when there isn't a huge zero page in use.
-hpa
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