Hi,
I have a hadoop test case on ixgbe 10GE cards on linux
1) two nodes with ixgbe 10GE cards
2) 100 threads on each node
3) ixgbe driver version 3.15.x(3.21.2 also tested and same behaviour)
4) 64 cpus on each node
problem seen:
1) network speed is 120MB/s(not acceptable product use)
2) softirqd load seen
3) set_irq_affinity is not helpful
When I limited the number of TX queue to 8 or 4, same test got much
better performance:
120MB/s -> 620MB/s
and the softirqd load gone
I'd like suggest we limit the number to 8 for better performance. How do
you think?
thanks,
wengang
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