From owner-FreeBSD-users-jp@jp.freebsd.org  Tue Oct 22 01:56:32 1996
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Date: Tue, 22 Oct 1996 01:56:29 +0900
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From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
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Subject: [FreeBSD-users-jp 5452] Re: NFS V3 performance
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$B2<@n!wElBg$G$9!%(B

> iozone $B$G$O(B write $B$N8e!"(Bread $B$K0\$kA0$K0lC6(B file $B$r(B close $B$7$F$$$^$7$?(B
> $B$+$i!"(BV2 $B$N>l9g$3$3$G(B cache $B$,(B invalidate $B$5$l$F$7$^$&$N$+$b$7$l$^$;$s!#(B
$B$J$k$[$I!$$=$l$G(Bcache$B$,8z$+$J$$$s$G$9$M!%(B

> $B2<(B> tcpdump$B$@$H!$(Btiming$B$OJ,$k$N$G$9$,!$<B:]$N(Brequest$B$NFbMF$,$o$+$j$^$;$s!%(B
> $B2<(B> $B$?$V$s!$(Btcpdump$B$N=q$-$@$9(Bfile$B$K(BNFS$B$N(Bheader$B$OF~$C$F$$$k(B($B$"$k$$$OF~$l$k(B
> $B2<(B> $B$3$H$O2DG=$J$N$G(B)$B$=$l$r2r@O$9$k(Bprogram$B$G$b=q$1$PNI$$$N$G$7$g$&$1$I!%(B
> $B2<(B> sniffer$B$@$H$o$+$C$?$j$7$^$9!)(B
> 
> tcpdump $B$G$b(B request $B$N<oN`$H(B response $B$NBP1~$O$?$I$l$^$9$,!"FbMF$H$O(B
> $BNc$($P(B create $B$N(B path $BL>$H$+(B getattr $B$N7k2L$G$9$+(B?  -s $B$G(B snaplen $B$r;X(B
> $BDj$7$F!"(B-x $B$rIU$1$FFI$_=P$;$P(B packet $B$r$^$k$4$H(B hex $B$G8+$k$3$H$O2DG=$@(B
> $B$H;W$$$^$9$,!"(Brpc $BEy$N%U%)!<%^%C%H$rCN$i$J$$$HJ,$1J,$+$s$J$$$G$9$h$M!#(B
> sniffer $B$@$H(B NFS $B$N%l%Y%k$^$G(B decode $B$7$F$/$l$^$9$N$GFbMF$^$G$_$l$?$H(B
> $B;W$$$^$7$?$,!"(BVer3 $B$N%*%Z%l!<%7%g%s$KBP1~$7$F$$$?$+$I$&$+$OITL@$G$9!#(B
$B:#$O$H$K$+$/(Bread$B$H(Bwrite$B$7$+9M$($F$$$J$$$N$G!$(B
$B$I$N(Bblock(file$B$N(Boffset)$B$r$I$l$@$1(B(count)$BFI$b$&(B/$B=q$3$&$H$7$F$$$k$+$r8+(B
$B$l$?$i$J$!$H;W$C$F$$$^$9!%3NG'$7$?$$$N$OK\Ev$K(Bblock number$B$,(Bsequential
$B$K$J$C$F$$$k$N$+$H$+!$=E$J$C$?(Brequest$B$,=P$F$$$J$$$+$H$+$G$9!%(B
$BE,Ev$J9=B$BN$N@k8@$7$F!$(Btcpdump -w logfile -s length
$B$N7k2L$rFI$_$H$C$F$d$l$P$$$$$@$1$@$H$O;W$&$N$G$9$,!%(B

> # $B2q<R$K$b(B Ver3 $B$r%5%]!<%H$7$?(B OS $BF1;N$G(B nfs mount $B$7$F$k4D6-$C$F$"$^(B
> # $B$j$J$$$s$G$9!#(B:-)
$BAa$/(BV3$B$,IaDL$K;H$($k$h$&$K$J$j$?$$$b$N$G$9!%(B

$BBg$-$J(Bfile$B$N(Bread$B$K$D$$$F$O(Bbio$B$r$9$Y$F;&$9(B(=read ahead$B$r$7$J$$(B)$B$HB.$/(B
$B$J$k$N$O3NG'$G$-$^$7$?!%$G$b(Bread ahead$B$N<BAu<+BN$O$d$O$j(B
$B$=$s$J$*$+$7$J$H$3$m$O$J$$$h$&$J5$$,$7$F$-$^$7$?!%(B

$B$&!<$s!$$-$b$A$o$k$$!%(B

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