From owner-FreeBSD-tech-jp@jp.freebsd.org  Fri Aug  6 15:22:01 1999
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Date: Fri, 06 Aug 1999 15:22:00 +0900
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From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-tech-jp@jp.freebsd.org
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Subject: [FreeBSD-tech-jp 2412] Re: lack memory on 3.2-RELEASE
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> > $B$=$N>l9g(B MFS$B>e$N%U%!%$%k$r(B rm $B$7$?$H$-$K(B $B$=$NItJ,$N%a%b%j$O5"$C$F$/$k(B
> > $B$N$G$7$g$&$+!)(B
> 
>   $B%=!<%9FI$s$G$J$$$J(B ^^;
> 
>   $BB?J,!"(Bfree$B$5$l$F(B madvice(2)$B$G(B MADV_DONTNEED $B$5$l$F!"C/$+$,;H$*$&$H$*$b$C(B
> $B$?$i$b$C$F$+$l$k$H$+$=$s$J=j$8$c$J$$$G$7$g$&$+(B :)
> $B!t$D$^$j!"8+$?$a5"$C$FMh$F$J$$$1$I;H$*$&$H$*$b$C$?$i;H$($A$c$&!#(B
> 
>   mfs $B$N%=!<%9$h$s$G$_$F$/$@$5$$!#(B

$B$?$V$s(B, 3.X $B7O$G$O(B free block $B$O2rJ|$5$l$J$$$N$G$O$J$$$+$H;W$$$^$9(B.
current $B$@$H(B, MADV_FREE $B$7$F$^$9$,(B.

> > $B$"$H$"$H!"(BMFS$B$NFbMF$,(B SWAP$B$KDI$$=P$5$l$k(B $B$J$s$F$3$H$O$"$k$N$G$7$g$&$+!)(B
> 
>   $B$b$A$m$s!"B>$N%W%m%;%9$,%a%b%j$r$D$+$&;~$K<B%a%b%j$,ITB-$7$F$l$P!"(Bmfs
> $B$G;H$C$F$k(B vm page $B$b(B page-out $B$5$l$F(B swap $B$K9T$-$^$9!#(B

MFS $B$G$O0-$$$3$H$K(B, VM cache $B$H(B mmap $B$5$l$?(B memory $BN>J}$K(B,
$BF1$8(B data $B$rJ];}$9$k2DG=@-$,9b$$$N$G(B, $B$h$[$I(B memory $B$,M>$C$F$$$k(B
$B>l9g0J30$O$"$^$jNI$$$3$H$O$J$$$H;W$$$^$9(B(kerne <-> user
process(mount_mfs) $B4V(B $B$N(B memory copy $B$bB?H/$7$^$9$7(B).

FreeBSD$B$N>l9g(B VM cache$B$,7k9=4hD%$C$F$/$l$^$9$7(B.

-- 
/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: finger -l simokawa@sat.t.u-tokyo.ac.jp
