On Fri, 16 Dec 2005, Andi Kleen wrote:
> > It appears that it is getting CPU starved for some reason (note the
> > 43%/40% transmitter CPU usage versus the 99%/99% CPU usage for the
> > 2.6.12.6 case).
>
> What happens when you turn off tso in ethtool?
Thanks!!! That did the trick.
[EMAIL PROTECTED] ethtool -K eth0 tso off
[EMAIL PROTECTED] ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: off
[EMAIL PROTECTED] ethtool -K eth0 tso off
[EMAIL PROTECTED] ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: off
chance% nuttcp -w2m 192.168.88.8
6299.0625 MB / 10.01 sec = 5278.6065 Mbps 100 %TX 74 %RX
chance% nuttcp -r -w2m 192.168.88.8
6221.3125 MB / 10.01 sec = 5213.2026 Mbps 100 %TX 71 %RX
And a full test I just did consistently got over 5 Gbps.
-Thanks again
-Bill
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