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From: Takahiro IMAYOSHI <imayoshi@ap.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.freebsd.org
References: <199912080450.NAA26810@afs.ntc.mita.keio.ac.jp>
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Date: Wed, 08 Dec 1999 18:16:58 +0900
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Subject: [FreeBSD-users-jp 48094] ileave factor of ccd ( Re: Oracle8 for Linux on FreeBSD3.1 )
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$B:#5H$G$9!#(B

In [ FreeBSD-users-jp : 48068 ];
	HOSOKAWA Tatsumi$B$5$s(B wrote.

$B:Y@n(B> <199912071244.VAA09876@serv1.hq.imagica.co.jp>$B$N5-;v$K$*$$$F(B
$B:Y@n(B> mino@bb.imagica.co.jp$B$5$s$O=q$-$^$7$?!#(B

>  $B$o$?$7$,$3$3$GD4@0$7$?$N$O!V%$%s%?!<%j!<%V%U%!%/%?!W$G$9!#(B
>  $B$3$$$D$,;YG[E*$@$HbK$s$@$+$i!#(B
> 
>  $B$s$G!"%$%s%?!<%j!<%V$r(B 2 $B$N$Y$-$K$9$k$N$OL50UL#$J$s$8$c$J$$(B
> $B$+$H;W$&$s$G$9$,!#(B

$B:Y@n(B> 2 $B$NQQ>h$K0UL#$OL5$/!"C1$KBg$-$JCM$G$"$k$3$H$K0UL#$,$"$j$^$9!#(B
$B:Y@n(B> 1 $B$:$DA}$d$7$F%F%9%H$7$F$b!"(B
$B:Y@n(B> $B$"$^$j0UL#$O$J$$$N$G$O$J$$$+$H$$$&$3$H$G$9!#(B

FreeBSD-2.2.8stable $B$K$F!"(BSeagate $B$N$A$g$C$H8E$$(B ST34371W $B$H$$$&(B HDD 
$B$r(B Tekram DC-390F $B$K#2$D7R$2$F(B ccd $B$7$F$$$^$9!#(B

$B:G=i$O(B ccd(4) $B$rFI$s$G(B ileave 32 $B$K$7$F$$$?$N$G$9$,!"(Biozone $B$N7k2L$,(B
$BC1BN$N(B IBM DCAS-32160U $B$KNt$C$F$$$?$N$G!"(Bileave $B$r(B 64,128,256,384 $B$H(B
$B=g<!A}$d$7$F$$$C$?$H$3$m!"$8$j$8$j$H7k2L$,NI$/$J$C$F$$$-$^$7$?!#(B

$B!t(B iozone $B$N7k2L$,$=$N$^$^<B:]$N1?MQ$G$N%Q%U%)!<%^%s%9$r<($9$H$O;W$$(B
$B!t(B $B$^$;$s$,!"B>$KE,Ev$JI>2AJ}K!$r;W$$$D$+$J$+$C$?$b$N$G!#(B

$B7k6I(B ileave 768 $B$G1?MQ$7$F$$$^$9!#$3$l$,:GE,$H$$$&$o$1$G$O$"$j$^$;$s(B
$B$G$7$?$,!"BgBN%5%A%C$FMh$?!uD4$Y$k$N$KK0$-$F$-$?!"$H$3$m$@$C$?$N$G!#(B

$B$3$l!"$-$C$H(B HDD $B$N(B buffer memory $B$N%5%$%:$K$b0MB8$7$^$9$h$M!)(B
$B$A$J$_$K(B ST34371W $B$O(B 512kbyte $B$N(B buffer $B$,>h$C$F$$$^$9!#(B


$B$H$3$m$G(B iozone $B$C$F(B sync/async $B$G(B write rate $B$N7k2L$,JQ$o$k$s$G$9$M!#(B
fsync() $B$7$F$k$+$i$@$H;W$$$^$9$1$I!":G=i$S$C$/$j$7$^$7$?(B ($B>P(B)
dd if=/dev/zero of=foo count=10000 $B$N7k2L$G$OJQ$o$i$J$$$N$G$R$H0B?4(B(?)
---
$B:#5H?rGn(B (Imayoshi Takahiro)  email: imayoshi@ap.t.u-tokyo.ac.jp
