From owner-FreeBSD-users-jp@jp.freebsd.org  Wed Oct  6 14:31:29 1999
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Date: Wed, 06 Oct 1999 14:31:24 +0900
Message-ID: <14330.57004.300614.36075V@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.freebsd.org
In-Reply-To: In your message of "06 Oct 1999 10:22:05 +0900"
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At 06 Oct 1999 10:22:05 +0900,
candy <candy@kgc.co.jp> wrote:
> 
> Takahiro IMAYOSHI <imayoshi@ap.t.u-tokyo.ac.jp> writes:
> 
> > # mmap()   in /usr/src/sys/vm/vm_mmap.c (RELENG_2_2)
> > # obreak() in /usr/src/sys/vm/vm_unix.c (RELENG_2_2)
> [snip]
> > $BLa$C$F$-$F$+$i$bFCJL$J=i4|2=$r$7$F$$$k$h$&$K$O8+$($^$;$s$+$i!"$I$A(B
> > $B$i$r;H$C$F$b(B malloc() $B$G8=$l$k8z2L(B(?)$B$OJQ$o$i$J$$$h$&$J5$$,$7$^$9!#(B
> 
> $B>/$J$/$H$b(B 3.2R $B$G$O(B mmap(2) $B$O%P%0$C$F$F;H$$J*$K$J$j$^$;$s!#(B
> # $B$A$g$C$HA0(B tech-jp $B$GA{$$$G$7$^$C$?(B (^^;
> 
> 8 $B7n(B 25 $BF|$K(B current $BMQ$N%Q%C%A$,=P$F$$$^$7$?$,!"(B3.3R $B$G$O$I$&$J$C$?$G(B
> $B$7$g$&$M(B??

$B$3$l$O(B, MAP_FILE $B$N$H$-$N$O$J$7$G$9$h$M!)(B
MAP_ANON $B$G$bLdBj$"$k$N$G$7$g$&$+(B?

MAP_ANON $B$G(B mmap $B$9$k$H$-$O(B, default/swap pager $B$,(B pager $B$K$J$k$h$&$J(B
object $B$,(B map $B$5$l$k$o$1$G$9$+$i(B, brk $B$H$[$H$s$I5sF0$O0l=o$H$$$&(B
$B:#5H$5$s$N2r<a$O@5$7$$$H;W$$$^$9(B.

At Wed, 06 Oct 1999 10:32:39 +0900 (JST),
Kenichi Okuyama <okuyama@trl.ibm.co.jp> wrote:
> 1page $B0J>eMW5a$9$k>l9g$O!"!V(Bfree $B$N;~$K3N<B$K%7%9%F%`$KJV$;$k!W$N$,(B
> $B%a%j%C%H$8$c$J$+$C$?$N$+(B?$B$3$l$O!D(B

$B$^$"(B, $B$=$l$,I,MW$+$I$&$+$O(B case by case $B$@$H;W$&$N$G$9$,(B,
$B$I$&$7$F$b$=$&$7$F$[$7$1$l$P(B,
ln -s H /etc/malloc.conf
$B$9$l$PNI$$$N$G$O!)(B 

$B!t2<<j$KN'5A$K(BOS$B$KJV$9$H(B, $B:F3NJ]$N$H$-$N(B overhead $B$,Bg$-$/$J$j(B
$B!t(Bperformance$B$,0-2=$7$^$9(B($BNc$($P(B zero fill $B$7$?$j$9$k$N$G(B).
$B!t(Bphk-malloc $B$O$"$kDxEY$O(B pool $B$9$k$h$&$K$7$F(B, pool$B$NBg$-$5$b(B
$B!tD4@0$G$-$k$h$&$K$J$C$F$$$^$9(B. ('<' $B$H$+(B '>')

$B8=>u$G(B overcommit $B$r8!CN$9$k$N$O(B, $BFq$7$$$G$7$g$&$M(B.
-curret/-hackers $B$"$?$j$G2?EY$+OCBj$K$J$C$F$$$k$H;W$$$^$9$,(B,
$B$3$l$H$$$C$?2r7h:v$,$"$C$?$h$&$J5-21$,$"$j$^$;$s(B.

$B$H$j$"$($:$N2r7h:v$H$7$F$O(B, swap $B$rA}$9$+(B, MAP_FILE $B$9$k$+$7$F(B,
$B$H$K$+$/==J,$J(B backing storage $B$r3NJ]$7$F$"$2$k$7$+$J$$$G$7$g$&$M(B.

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