Date: Mon, 15 May 2006 20:13:05 -0500 From: Gunter Wambaugh <gunter@six-two.net> To: freebsd-questions@freebsd.org Subject: Bandwidth Troubleshooting Message-ID: <2EF50459-DD90-44EF-A905-DF324DE55CF3@six-two.net>
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I have been having this off and on problem with my FreeBSD server for
some time now, and I haven't been able to track down the cause.
Bottom line: network throughput between local boxes is around 200KB/
s on a 100MBs network. This will last for a few hours and then
quietly return to the ~2MB/s I am used to. (Speed according to
scp). I have used netstat -anf inet, sockstat -4, ps auxww, and top
to see what is running, but I see nothing obvious. I do see the
occasional
fxp0: link state changed to DOWN
fxp0: link state changed to UP
in my dmesg. Anyone have any suggestions on how to track this thing
down?
uname -a
FreeBSD gorgoroth.six-two.net 6.0-RELEASE FreeBSD 6.0-RELEASE #1: Sat
Feb 25 11:25:33 CST 2006 root@gorgoroth.six-two.net:/usr/obj/usr/
src/sys/OPTIMIZED i386
ifconfig
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
inet6 fe80::206:29ff:fede:51ab%fxp0 prefixlen 64 scopeid 0x1
inet 192.168.1.106 netmask 0xffffff00 broadcast 192.168.1.255
ether 00:06:29:de:51:ab
media: Ethernet 100baseTX <full-duplex>
status: active
fxp1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
ether 00:06:29:de:51:aa
media: Ethernet autoselect (none)
status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
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