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To: FreeBSD-users-jp@jp.freebsd.org, mino@bb.imagica.co.jp
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Message-Id: <19991210132607L.simokawa@sat.t.u-tokyo.ac.jp>
Date: Fri, 10 Dec 1999 13:26:07 +0900
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
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Subject: [FreeBSD-users-jp 48148] Re: ileave factor of ccd ( Re:
 Oracle8 for Linux on FreeBSD3.1 )
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mino> > ($B>/$J$/$H$b!"(Bileave $B$,J*M}E*$J(B 1 $B%H%i%C%/$h$j$b>.$5$$$H$$$&$N$O!"(B
mino> > $BLdBj$,$"$k$N$G$O$J$$$G$7$g$&$+!)(B)
mino> 
mino>  $B$3$3$ONI$/H=$j$^$;$s$G$9!#(B
mino>  $B8=<B$K(B ileave $B$,(B 16 $B$N;~$K$O%i%s%@%`%"%/%;%9@-G=(B(seek $B@-G=(B)
mino> $B$OC10l$N(B HDD $B$N;~$NFsG\$K$J$C$F$$$^$9!#(B
mino>  $B$b$7$b(B ccd(4) $B$N(B ileave $B$,(B CHS $B$r0U<1$7$?$j!"%7%j%s%@$H$NBg(B
mino> $B>.$H4XO"$,$"$k$N$J$i!"$3$l$O$*$+$7$J7k2L$H$$$&$3$H$K$J$j$^$9!#(B

16(8KB) $B$GNI$/$J$k$H$$$&$N$O(B, UFS $B$N(B block size $B$K4X78$7$F$$$k$h$&$J(B
$B5$$b$7$^$9(B.

$B;d$,A0$K(B64KB$B$H$+$$$C$?$N$O(B, SCSI bus $B>e$G$O(B physio $B$N>e8B$N(B 64KB$B$,(B
$B:GBg$N0l2s$NE>Aw%5%$%:$J$N$G(B, $B$=$l$r:GBg8B$K@8$+$9$?$a$K(B, $B$=$l$h$j(B
$BBg$-$$%5%$%:$K$7$F$*$$$?$[$&$,NI$$$H;W$&(B, $B$H$$$&0UL#$G$9(B.

$BAGD>$K(BI/O $B$9$k$H(B block size $B$N(B 8KB $B$J$s$G$9$,(B, cluster read/write 
$B$9$k$3$H$K$h$C$F:GBg(B64KB$B$NBg$-$5$N(B I/O $B$K$J$k$O$:$G$9(B.

$B$3$3$i$X$s$N@-G=$O(B benchmark $B$N:]$K;HMQ$9$k(B file $B$N(B size $B$K$h$C$F(B
$BJQ$C$F$/$k$H$O;W$$$^$9$,(B.

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

