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From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
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Date: Thu, 30 Oct 2003 11:48:51 +0900
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Subject: [FreeBSD-users-jp 77068] Re: over 4GB mem (PAE)
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At Thu, 30 Oct 2003 10:42:32 +0900,
Norikatsu Shigemura wrote:
> 
> $B=EB<K!9n$G$9!#(B
> 
> 2003/10/30 09:07 $B$K(BHidetoshi Shimokawa$B$5$s$O=q$-$^$7$?(B.
> >> > $B$$$d!"$=$l$@$H!VB>$NItJ,$r(B page out $B$7$F$G$b!"$3$N(B mmap $BBP>]ItJ,$O(B
> >> > page out$B$7$J$$$G$/$l!WE*$J;H$$J}$,$G$-$J$$5$$,!D!#(B
> >> > #page out $B$7$F$h$$$J$iIaDL$K%U%!%$%k$r%^%C%W$9$j$c$$$$$o$1$G$9$7!#(B
> >> $B!V(Bpage out $B$7$J$$$G$/$l!W$J$s$F$$$&$N$O(B, $BIaDL$K(B malloc(3) $BEy$G3NJ](B
> >> $B$7$?(B memory $B$G$b$G$-$J$$$H;W$$$^$9$,(B.
> >> $BIaDL$K(B file $B$r(B map $B$9$k$H(B, $BDj4|E*$K(B sync $B$5$l$k$N$G(B, $B$=$l$rM^@)$9$k(B
> >> $B$?$a$K(B, unlink(2) $B$9$k$+(B MAP_NOSYNC flag $B$rN)$F$k$H$$$&$3$H$G$9(B.
> 
> 	$B$s!A!#(Bmlock(2), madvise(2), mprotect(2) $B$"$?$j$G$J$s$H$+$J(B
> 	$B$k$b$N$G$b$J$+$C$?$j$7$^$;$s$+(B? (^^; $B$9$/$J$/$H$b(B mlock(2)
> 	$B$N%^%K%e%"%k8+$k$H(B, $B4|BT$G$-$=$&$G$9$,!#!#(B

  Since physical memory is a potentially scarce resource, processes are
  limited in how much they can lock down.  A single process can mlock() the
  minimum of a system-wide ``wired pages'' limit and the per-process
  RLIMIT_MEMLOCK resource limit.

  These calls are only available to the super-user.

'$BIaDL$K(B'$B$O5v$5$l$J$$$G$9$h$M(B.
$B$=$b$=$b(B, memory $B$,B-$j$J$$>u67$G$J$1$l$P(B, page out $B$5$l$J$$$o$1$G$9$+(B
$B$i(B, $B$=$N>u67$G6/@)E*$K(B lock $B$7$F$7$^$&$N$O(B, $B$=$l$J$j$K4m81$G$9(B.

> 	$B$^$!2?$K$;$h(B, $B$$$^$5$i(B EMS again! $B$J%W%m%0%i%_%s%0$O7y$G$9(B:-)$B!#(B
> 	$BEv;~(B(12$BG/$/$i$$A0(B?) VCPI/DPMS $B$,EP>l$7$F$I$s$@$15_$o$l$?$3(B
> 	$B$H$+!D!#(B

$B$^$"(B, $B9%$-$G;H$&?M$O$$$J$$$H;W$$$^$9(B.

$BMQES$K$h$j$^$9$,(B, 64bit $B$K$J$k$H(B, pointer $BEy$,G\$NBg$-$5$K$J$C$?$j(B
$B$7$F(B, code size $B$d$i(B, data $B$,G\6a$/$K$J$j(B. $B%a%b%jBS0h$,G\$K$J$C$F$b(B
$B8z2L$,BG$A>C$5$l$F$7$^$&(B, $B$H$$$&$h$&$J0u>]$r(B alpha $B$r;H$C$F$$$k$H$-$K(B
$B$O46$8$^$7$?(B.

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html



