On 11/04/2013 09:21 PM, Oren Ben-Kiki wrote:
Note that as memory becomes cheaper and larger there will be more
pressure on 64-bit OS-es to switch to large pages; the number of pages
needed to map several GBs of memory today is already getting out of
hand, causing TLB misses to become a performance issue in some cases -
imagine a system with 0.xTBs of memory and it becomes ludicrous.
So playing tricks with MMU and lazy page loading may not work as well
as it does with today's the small 4K page size. Of course, Rust is
hardly the only platform that would be affected :-) and ideally, it
would be possible to have more flexibility than today in choosing
which page sizes are used where in the program's address space... but
it remains to be seen how exactly this would play out.
Just a point to keep in mind...
Thanks! That is an interesting point that I hadn't thought about.
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