broadcom NIC SLOW!
I have a Dell Poweredge R410 which has dual Broadcom network adapters. The problem I'm having is that they only run at 100mb half duplex. Unfortunately, I really need these to run at full speed (1000mb) as the network throughput is dragging down several processes that need to write over the network to this machine.
What I've tried so far:
If I plug in any of my other servers into this particular switch port they will run at 1000mb full duplex. I've tried plugging this server into another switch (different brand altogether) and it still will only negotiate 100mb half duplex where other machines will negotiate 1000mb/full. I've installed Slackware 13.1 (64bit), CentOS 5 (64bit) and Slackware 13.1 (32bit). No major change in the network performance between any of these installations all using the bnx2 module. I've tried forcing the cards to 1000mb/full by editing the switch settings (forced to 1000) and by tooling with the NIC using ethtool. Neither approach allowed the cards to communicate over 100mb/half.
01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
I'm open to any suggestions that might be helpful. Thanks.
Last edited by AntEater; 01-06-2011 at 01:08 PM.
Reason: added more information