Using netperf-wrapper for testing qdisc Head-of-Line properties at
10Gbit/s.

For netperf-wrapper intro see:
 http://netoptimizer.blogspot.dk/2014/09/mini-tutorial-for-netperf-wrapper-setup.html

Summary: These tests show the difference between TSO, GSO and disabled
TSO+GSO, on a clean net-next kernel.

Kernel: 3.17.0-rc4
 * net-next at commit: c0d1379a

Netperf-wrapper test:
 * tcp_upload_prio

Test desc in:
 * https://github.com/tohojo/netperf-wrapper/commit/1e6b755e8051b6

Cmdline: (notice step-size)
 export TITLE=net-next-c0d1379a
 sudo -E taskset -c 2 ./netperf-wrapper -H 192.168.8.2 -t $TYPE_${TITLE} \
  --step-size=0.1 tcp_upload_prio

Test TYPES are:
- TSO     == ethtool -K eth4 gro on  gso on  tso on
- GSO     == ethtool -K eth4 gro on  gso on  tso off
- NoneXSO == ethtool -K eth4 gro off gso off tso off

Results files, notice TYPE name in filename::

 tcp_upload_prio-2014-09-16T143740.451978.TSO_net_next.json.gz
 tcp_upload_prio-2014-09-16T143850.831533.GSO_net_next.json.gz
 tcp_upload_prio-2014-09-16T144001.205568.NoneXSO_net_next.json.gz

Graph generation:
 for x in *.json.gz; do ./generate_all_graphs__tcp_upload_prio.sh $x; done