RE: Debugging Network Performance

KGDB may be a good start. netif_rx() is where the packet gets
passed to the
stack. It basically throws the packet on a linklist for ip_rcv() in
ip_input.c to pick up and start processing it through the stack until it
passes the results to the application. This is tough stuff. Let
me know how
you make out.

Any idea who the network stack maintainer is? Perhaps they have something
that timestamps a packets progress through the pipeline.

I would guess the IP stack has not changed much between kernels.
I would be
more concerned about how the scheduler is working and other kernel tasks.

The system is basically idle except for the NFS/FTP traffic.


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