From owner-FreeBSD-users-jp@jp.freebsd.org  Wed Dec 24 14:32:40 1997
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To: FreeBSD-users-jp@jp.freebsd.org
From: TANIYAMA Hideki <yoko@sunny.co.jp>
In-Reply-To: Your message of "Wed, 24 Dec 1997 14:00:32 +0900"
References: <19971224140032A.simokawa@sat.t.u-tokyo.ac.jp>
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Date: Wed, 24 Dec 1997 14:32:19 +0900
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Subject: [FreeBSD-users-jp 22739] Re: Expmt. Concatinated Disk driver.
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$BC+;3$G$9!#(B

>>>> On Wed, 24 Dec 1997 14:00:32 +0900,
>>>> 	Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> wrote:

simokawa> 40MB/sec$B6a$/$@$9$?$a$K$O(B, $BIaDL$O(BRAID controller$B$,(Bbottle neck
simokawa> $B$K$J$k$h$&$J5$$,$7$^$9(B. $B$=$l$@$1$G$k(Bcontroller$B$,$"$l$P@'HsCN(B
simokawa> $B$j$?$$$G$9(B.

$B;d$b$=$&;W$$$^$9!#(Bcontroller$B>e$N(Bcache$B$,(Bhit$B$7$?;~0J30$O$=$&4JC1$K$O=P$J(B
$B$$$G$7$g$&!#(B

simokawa> $B$?$7$+(Bccd(striping$B$N$_(B)$B$G$b(B20MB/s$BDxEY$7$+=P$J$$$N$G$O$J$$$G(B
simokawa> $B$7$g$&$+(B? $B$3$l$O(Bmemory$B$N(Bbandwidth$B$NLdBj$@$H$$$&OC$rJ9$$$?$3(B
simokawa> $B$H$,$"$j$^$9(B.

$B0JA0!"LLGrH>J,$G(Bbenchmark$B$KG3$($F$$$?;~(B($B>P(B)$B!"(BWIDE SCSI BUS 4$BK\$K(BHDD 7
$BBf$H$$$&9=@.$G(Bccd$B$7$F$_$?$3$H$,$"$j$^$9!#$3$l$@$H!"$5$9$,$K%P!<%9%HE>(B
$BAw$G$O$=$3$=$3$NB.EY$,=P$^$9(B($B$,!"M}O@CM$K1s$/5Z$P$J$$$3$H$K$OJQ$o$j$"(B
$B$j$^$;$s(B)$B!#(B

$B$=$N;~$N7k2L$G$O$3$s$J46$8$G$7$?!#(B

> Writing the 1024 Megabyte file, 'iozone.tmp'...46.445312 seconds
> Reading the file...31.242188 seconds
>
> IOZONE performance measurements:
>         23118411 bytes/second for writing the file
>         34368330 bytes/second for reading the file

write$B$,(B23MB/s$B!"(Bread$B$,(B34MB/s$B$C$F$H$3$m$G$9$M!#$$$m$$$m(Binterleave$B$r$$$8$C(B
$B$F$_$?$N$G$9$,!"(B64$B$/$i$$$N$H$3$m$K%T!<%/$,$"$C$?$h$&$G$9!#>e5-$N7k2L$O(B
interleave 64$B$N;~$NB,Dj7k2L$G$9!#(B

$B$3$N;~$K$O!"(BAsus SC875 + Adaptec AAA-133$B$H$$$&9=@.$G!"(BCPU$B$O(BP-II/300MHz$B!"(B
$B%a%b%j$O3N$+(B64MB$B$@$C$?$H;W$$$^$9!#(B

$B%9%T%s%I%k$NF14|$r<h$C$?$j$9$l$P$^$@B.$/$J$k$b$N$J$N$+!"$=$l$H$b2<@n$5(B
$B$s$N$*$C$7$c$kDL$jB>$,%\%H%k%M%C%/$K$J$C$FF,BG$A$J$N$+!"<c435$$K$J$k$H(B
$B$3$m$G$O$"$j$^$9!#(B

$B!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A(B  $BC+;3(B $B=(<y(B yoko@sunny.co.jp
  $B$h$3$J$_(B $B$h$3$J$_(B $B$h$3$J$_(B $B$h$3$J$_(B   $B3t<02q<R(B $B%5%K!<%=%U%H(B
