Re: em0 NIC slow on 8.2-p1 amd64?

On Wed, Jul 20, 2011 at 07:12:27PM +0200, Eduardo Morras wrote:
At 18:04 20/07/2011, Michael W. Lucas wrote:
Hi,

I'm running FreeNAS 8.0/amd64, with an 8.2-p1 kernel. When using FTP
or SCP, performance maxes out around 30MB/s. This is on a gigabit
network, no errors showing.

It looks a lot like kern/152828, but it seems that nobody's looking at
that.

Don't know about that, but perhaps the nic is not working at full gigabit.

Can you post the output of ifconfig?

#ifconfig em0


It's at gigabit:

em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
ether 00:15:17:31:c8:fe
inet xxxxxxx
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active

Thanks,
==ml


If it's not connected at 1 gigabit or not full duplex you can force
it with ifconfig. If there are too much errors check the cable.

As per suggestions from the archives, I've tried disabling TSO. No
change.

Anyone else experiencing this, or have any suggestions? At the moment,
the boss is complaining that his Windows Home Server is doing better
than this machine, and that's a technological direction I really don't
want to go in.

Thanks,
==ml


--
Michael W. Lucas
http://www.MichaelWLucas.com/, http://blather.MichaelWLucas.com/
Latest book: Network Flow Analysis http://www.networkflowanalysis.com/
mwlucas@xxxxxxxxxxxxxxxxxxxx, Twitter @mwlauthor
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