Yanko Kaneti wrote:
On Sun, 2006-04-16 at 03:03 +0100, Andy Furniss wrote:
Yanko Kaneti wrote:
Setting mtu 16500 for the class fixed it. But I wonder where did these
giants come from in the first place? The mtu of the interface is and was
1500. Or so ifconfig and ip link tell me. Or this is some other mtu we
are talking about...
Hmm I didn't expect that - maybe there is some problem with the nic
drivers not obeying kernel - is there any tso offload etc. at work here ?
Yes and its on by default. The interface mtu still says 1500.
I've tried deleting and attaching the qdisc+class (without explicit
large mtu) with both tso on (ethtool -K eth0 tso on) and tso off , it
doesnt seem to matter - giants appear in both cases.
With large mtu for the class no giants with both tso on and off.
Yanko
I think you need to ask fedora or intel driver maintainer about this.
AIUI tso is not in vanilla kernels and the patches are quite invasive.
Andy.
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