Date: Wed, 22 Nov 2000 13:51:34 -0800 From: David Greenman <dg@root.com> To: Tim Ayers <tayers@bridge.com> Cc: questions@FreeBSD.ORG Subject: Re: NIC throughput slowness Message-ID: <200011222151.NAA18369@implode.root.com> In-Reply-To: Your message of "22 Nov 2000 12:51:48 CST." <r943262j.fsf@tim.bridge.com>
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>I have just installed FreeBSD4.1.1 onto a computer with an Intel Pro >10/100B/100+ Ethernet card connected to a 100Mb Ethernet network. I am >noticing very slow network throughput (like 0.24 Mbps) for this >computer. I'm gauging this by FTP'ing a 1MB file around between >different machines on our local network. > >The computer has two NIC cards, but I've only set up/activated one >card. According to 'ifconfig' the card is using 100baseTX. I checked >the router/hub and it is using FAST ethernet for this machine's >connection. Sounds like a problem with the duplex autonegotiation with your switch. Try setting both ends to forced full-duplex. If that doesn't work, try setting both to half-duplex. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com Pave the road of life with opportunities. >I've noticed that the times returned by 'traceroute' between my >various machines seem the same, so maybe the problem is just with >FTP. 'traceroute -P TCP' (FTP uses TCP, right?) always times out so >I'm not sure. I don't know what other "benchmarks" to try. > >Here's some info I hope is pertinent. > > bash-2.04$ dmesg | grep fxp > fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xcc80-0xccbf mem 0xfe100000-0xfe1fffff,0xfe201000-0xfe201fff irq 17 at device 13.0 on pci0 > fxp0: Ethernet address 00:d0:b7:84:92:0e > fxp1: <Intel Pro 10/100B/100+ Ethernet> port 0xcc40-0xcc7f mem 0xfe000000-0xfe0fffff,0xfe200000-0xfe200fff irq 18 at device 14.0 on pci0 > fxp1: Ethernet address 00:d0:b7:84:93:1f > > bash-2.04$ ifconfig > fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > inet 167.76.89.57 netmask 0xffffff00 broadcast 167.76.89.255 > inet6 fe80::2d0:b7ff:fe84:920d%fxp0 prefixlen 64 scopeid 0x1 > ether 00:d0:b7:84:92:0d > media: autoselect (100baseTX) status: active > supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP > fxp1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > ether 00:d0:b7:84:8b:e4 > media: autoselect status: no carrier > supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP > lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500 > ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500 > faith0: flags=8000<MULTICAST> mtu 1500 > gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 > gif1: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 > gif2: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 > gif3: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa > inet6 ::1 prefixlen 128 > inet 127.0.0.1 netmask 0xff000000 > > >I'm not sure where else to look. Thanks for any help. > >Hope you have a very nice day, :-) >Tim Ayers (tayers@bridge.com) > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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