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Date: Sun, 13 Jan 2002 21:11:03 +0900
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From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
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Subject: [FreeBSD-users-jp 66456] Re: PPPoE
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At Sun, 13 Jan 2002 05:37:48 +0900,
Tatsumi Hosokawa wrote:
> o PPP $B%W%m%H%3%k<+BN$,=E$$(B
> 
> o ppp(8) $B$N<BAu$,=E$$(B
> 
> $B$N$I$A$i$+$@$m$&!"$H$$$&46$8$G$9!#(B
> $B$&!<$`!#(BPentium III $B$N(B 866MHz $B;H$C$F$k$s$@$1$I$M$'!D!#(B

ppp(8) $B$O$;$$$<$$(B T1 $B$0$i$$$7$+A[Dj$7$F$J$/$F$b$*$+$7$/$O$J$$$+$b(B.
$B86M}E*$K$O(B, userland $B$G<BAu$7$F$$$k$N$G(B, speed $B$,Aa$/$J$l$P$J$k$[$I(B,
kernel $B$G<BAu$7$F$k$b$N$KHf$Y$F(B, $BITMx$K$O$J$j$^$9$M(B.

userland $B$H$$$&$3$H$G$O(B, natd $B$b$=$&$G$9$,(B, natd $B$C$F$I$N$0$i$$(B
$B@-G=$G$^$9(B? ($B$[$=$+$o$5$s$N$H$3$m$O(B, $B%G!<%?$,$"$j$=$&(B)
natd $B$HF1DxEY$N@-G=$,=P$F$b$h$5$=$&$J5$$O$7$^$9(B.

10(Mbps) / 8(bits/byte) / 1500(bytes/packet) = 833.3 packets/sec

$B$@$+$i(B, 1 packet $B$4$H$K(B ppp $B$KEO$5$l$k$H$9$k$H(B,
$B1}I|$G(B, $B:GDc(B1700$B2s$0$i$$(B context switch $B$9$k$s$G$7$g$&$+$M(B.

$B$H$3$m$G(B, CPU $B$O(B idle $B$7$F$k$s$G$7$g$&$+(B?
idle $B$7$F$$$k$J$i$P(B, $B$J$K$+A[Dj$7$F$$$J$$$h$&$JLdBj$,$"$k$N$+$b$7$l$^$;$s(B.

> $B$3$N@-G=$@$H!"(BPPPoE $B$N%5!<%P$K(B FreeBSD $B;H$&$N$O$"$-$i$a$k$7$+$J$$$J$!!#(B

$B$I$&$$$&MQES$r9M$($i$l$F$k$s$G$7$g$&$+(B?

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html
