Different Rates Receiving and Sending on eth0

kbarter · n00b Joined: 30 Dec 2003 Posts: 14

I am having a problem where sending data to one of my PCs is much slower than receiving data from it. The receive rate is between 70 and 90 Mbs, while sending is from 700 Kbs to 8 Mbs.

I have a small network with the following components:
SMC Barricade Router - supports 802.11b, and 10/100 Mbs ethernet
Netgear Highspeed switch (100 Mbs)
PC1 - P4 3.4 , using sk98lin driver for onboard gigabyte ethernet
PC2 - PIII 900 using tulip driver (100 Mbs card)
PC3 - PII 450 using tulip driver (100 Mbs card)

All of the PCs are connected to the Netgear switch, and the switch is attached to my router.

I have been using iperf to test the speed of the transfers to/from various systems. Here are the results:

PC1 to PC3

jkt · Posted: Sat Feb 12, 2005 4:09 pm Post subject:

any spurious messages on PC3? You can also try to move the NIC in PC3 to another PCI slot or replace it...
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kbarter · n00b Joined: 30 Dec 2003 Posts: 14

I checked syslog and messages, and the only entries there had nothing to do with the ethernet card.

I will try moving the network card to another slot when I get a chance, and see if that helps at all.

Thanks

jkt · Posted: Sat Feb 12, 2005 11:47 pm Post subject:

`dmesg` or /var/log/kern.log, for example. And you can also try to build NIC driver with debugging support...
_________________
cd /local/pub && more beer > /dev/mouth

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