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Date: Fri, 10 Apr 1998 18:19:21 +0900
From: Hirohisa Mizuta <mizuta@bme.ei.hosei.ac.jp>
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Subject: [FreeBSD-users-jp 27125] Re: [Q] About transmit underflow
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$B?eED!wK!@/Bg$G$9!#(B

  On Fri, 10 Apr 1998 10:22:42 +0900, Subject: [FreeBSD-users-jp 27090] RE: [Q] About transmit underflow
  "N.Ogiso" <ogiso@use-net.co.jp> said:

ogiso> > de0: abnormal interrupt: transmit underflow (raising TX threshold to
ogiso> 96|256)
ogiso> > de0: abnormal interrupt: transmit underflow (raising TX threshold to
ogiso> 8|512)
ogiso> 
ogiso> $B$3$N%a%C%;!<%8$&$A$G$b=P$^$7$?!#(B

$B$&$A$G$b=P$F$$$k%^%7%s$,(B $B0lBf(B $B$"$j$^$9!#(B

          8port       4port
         +-----+     +-----+
         | Hub |     | Hub |
         +-----+     +-----+
+------+  | | |       | | |   +-----+
|$B%5!<%P(B|--+ | +-------+ | +---| foo |$B"+(B $B$3$$$D(B
+------+    |    10m    |     +-----+   
           6$BBf(B         1$BBf(B

foo $B$O!":G=i(B 8port $B$N%O%V$KD>7k$@$C$?$N$G$9$,!"$b$&0lBf$D$J$.$?$/$J$C$F(B
$BM>$C$F$$$?(B 4port $B$N%O%V$G$o$1$?$iF0$$$?$N$G!"$=$N$^$^;H$C$F$$$k>u67$G$9!#(B
$B$=$l$r$d$C$?$N$HF1;~$K!"(Bfoo $B$K(B AAA-133 $B$r$D$1$FF0:n3NG'$H$+$r;O$a$F$^$7$F(B
AHA-2940U, AAA-133, DE-500AA, Millennium $B$H(B PCI $B%9%m%C%HK~GU$G(B
$B7k9=Ii2Y$r$+$1$?$j$7$F$$$k$N$G!"$=$&$$$&$3$H$N1F6A$b$"$k$N$+$H;W$C$F$^$7$?!#(B
($B$G!"$$$^$$$A860x$N@Z$jJ,$1$,=PMh$J$$$N$G!"$[$C$F$"$k>uBV$G$9!#(B(^^;)

$B:#(B dmesg $B$r$_$?$i(B

$B%5!<%P!'(B
de0: receive: 00:00:f8:1e:5b:93: bad crc
de0: receive: 00:00:f8:1e:5b:93: bad crc
de0: receive: 00:00:f8:1e:5b:93: bad crc

foo:
de0: abnormal interrupt: transmit underflow (raising TX threshold to 96|256)
de0: abnormal interrupt: transmit underflow (raising TX threshold to 8|512)
de0: abnormal interrupt: transmit underflow (raising TX threshold to 1024)

$B$J$s$F$N$,=P$F$$$^$7$?!#(B
-- 
$B?eED(B
