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- Join Date
- Apr 2007
Slow network performance on nforce 405
Just purchased an ecs 6100sm-m geforce motherboard
based on the nforce 405 chipset, and using the MCP61 onboard NIC.
I'm running gentoo linux, and kernel 2.6.19 (the gentoo version 2.6.19-gentoo-r5). The driver I'm using is the forcedeth module in the kernel.
I noticed I had fast access to my departmental intranet, but very slow (bytes/s or stall) to the rest of the internet, via http, sftp, rsync. I ran traceroute from my computer, and another box on my intranet.
From working computer:
harris@rabi:~$ traceroute gpu.srv.ualberta.ca
traceroute to gpu.srv.ualberta.ca (220.127.116.11), 30 hops max, 38 byte packets
1 18.104.22.168 (22.214.171.124) 0.429 ms 0.357 ms 0.325 ms
2 126.96.36.199 (188.8.131.52) 1.273 ms 0.682 ms 0.645 ms
3 184.108.40.206 (220.127.116.11) 1.410 ms 1.164 ms 1.145 ms
4 login1.srv.ualberta.ca (18.104.22.168) 0.890 ms 0.699 ms 0.629 ms
traceroute to login1.srv.ualberta.ca (22.214.171.124), 30 hops max, 46 byte packets
1 126.96.36.199 (188.8.131.52) 0.367 ms 0.313 ms 0.297 ms
2 184.108.40.206 (220.127.116.11) 1.142 ms 0.652 ms 0.618 ms
3 18.104.22.168 (22.214.171.124) 8.909 ms 4.158 ms 1.125 ms
4 * * *
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15 * * *
I figured maybe since the MCP61 such a new chipset, the forcedeth module was not quite fully developed yet, so I plugged in another NIC in a PCI slot. I disabled the onboard NIC in the BIOS, and threw in a Realtek Semiconductor Co., Ltd. RTL-8169 gigabit card, and built the r8169 module. Unfortunately, I get the exact same results.
I don't see anything interesting in dmesg, anybody have any ideas? Seems like something is causing my tcp packets to have trouble being bounced around the net, any kernel options I could set to fix this? Any sleuthing to be done to figure this problem out?
I'd really appreciate any help on this one, my networking knowledge is pretty limited.
p.s. I did update the BIOS to the newest as a check.