[dpdk-users] Measuring packet throughput

[Cristian RUIZ <cristian.ruiz@inria.fr>]

hello,

I'm performing an experiment to measure the performance gain of OVS + 
DPDK. The goal is to measure the improvements in packet forwarding. My 
setup consist in two physical machines (M1 and M2). Each machine have a 
network card with two ports. The two machines where configured in the 
following way:

Machine M2: I set up OVS+DPDK and I set up the flow to forward packets 
from port1 (eth1) to port2 (eth2)

Machine M1: I installed DPDK packet generator to send packets to M2 
using eth1.

    M1                                         M2
-----------                               -------------
| pktgen  | eth1 ------------------> eth1 | ovs+ dpdk |
|         |                               |           |
|         | eth2 <------------------ eth2 |           |
-----------                               -------------

I have set up everything without problem but I don't know how to 
reliably measure the packet throughput for a given port. What tool 
should I use? At the moment I have just configured pktgen in machine M1 
to get port2 (eth2) statistics but I didn't find any way to put the 
results in text format and things go so fast that I cannot capture the 
right value. I have read articles and reports where they have measured 
this same metric I was wondering what tool they have used to measure it.

Thank you in advance for any help.