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AdamB
Asked: 2012-02-25 15:17:39 +0800 CST

FreeNAS box has slow network transmit speeds

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I'm seeing some really odd issues with network speeds on my FreeNas 8.0.3 box. Receiving traffic is fine, but sending traffic slows down to 10-50kb/s, and stalls a lot.

Receiving: enter image description here

Transmitting: enter image description here

Iperf:

Server receiving: enter image description here enter image description here

Server sending: enter image description here enter image description here

ifconfig: enter image description here

sysctl -a | grep tcp

I have all other services disabled other than SSH and FTP. It's the issue on any volume I have on the machine. I've tried two different NICs, changed out cables, tried 3 different switches. I upgraded to 8.0.3 from 8.0.1 to see if it fixed this problem and it didn't.

This started happening seemingly out of the blue, any ideas on what may be wrong?

networking freebsd slow-connection truenas

1 Answers

  1. This sounds like a possible duplex mismatch on your server and the network switch.

    It looks like your nas box is set to 1gb full duplex. Is your network switch also set to 1gb full duplex?

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