Messages in this thread | | | Date | Wed, 16 Jan 2008 11:05:09 +0900 | From | KOSAKI Motohiro <> | Subject | Re: [RFC] mmaped copy too slow? |
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Hi Paulo
> One thing you could also try is to pass MAP_POPULATE to mmap so that the > page tables are filled in at the time of the mmap, avoiding a lot of > page faults later. > > Just my 2 cents,
OK, I will test your idea and report about tomorrow. but I don't think page fault is major performance impact.
may be, below 2 things too big - stupid page reclaim - large cache pollution by memcpy.
Just my 2 cents :-p
- kosaki
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