hi all:
      the description is:
######################################
All operations are performed in zero-copy if you open the device as “zc:ethX”. You see that very easily doing this simple test (eth3 is a 10 Gbit interface running the PF_RING-aware ixgbe driver). The first command is able to send 0.82 Gbit, the second 10 Gbit.
# ./zsend -i eth3 -c 3 -g 0
# ./zsend -i zc:eth3 -c 3 -g 0
######################################
From: http://www.ntop.org/pf_ring/introducing-pf_ring-zc-zero-copy/

I want to know whether the zero-copy has a decisive role to provide this feature, which let the flow increase to 10 Gbit.

Thank you.
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