Date: Sun, 1 Jul 2007 20:42:05 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: freebsd-questions@freebsd.org Subject: large pages Message-ID: <20070701203720.X64116@wojtek.tensor.gdynia.pl>
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does FreeBSD {can,will,patch exist} supports using huge pages? i mean 2M
pages on AMD64 and 2/4M pages on i386
i don't mean any automatics, just enough will be to be able to map a big
chunk of RAM to an app with such pages, or even more (better) to make
FreeBSD use only part of memory for itself, and leaving everything else as
/dev/something that can be mmap'ped (and locked) to program this way.
i need freebsd just for running one program needing about 1280 megs of
data space (+1-2 meg of code stacks etc. can be normally mapped).
everything else is just using less than 1% of power.
with 1536MB AMD64 machine it would be nice for FreeBSD to boot seeing 256
megs for itself and allowing 1280 megs to be mapped&locked to just one
program.
thank you very much
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