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.. Copyright (c) <2016>, Intel Corporation
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======================================================================
Benchmark the performance of single core forwarding with FVL25G/NNT10G
======================================================================

Prerequisites
=============

1. Hardware:
    1) nic_single_core_perf test for FVL25G: two dual port FVL25G nics,
        all installed on the same socket, pick one port per nic
    3) nic_single_core_perf test for NNT10G : four 82599 nics,
        all installed on the same socket, pick one port per nic
  
2. Software: 
    dpdk: git clone http://dpdk.org/git/dpdk
    scapy: http://www.secdev.org/projects/scapy/
    dts (next branch): git clone http://dpdk.org/git/tools/dts, 
                       then "git checkout next" 
    Trex code: http://trex-tgn.cisco.com/trex/release/v2.26.tar.gz 
               (to be run in stateless Layer 2 mode, see section in
                Getting Started Guide for more details)
    python-prettytable: 
        apt install python-prettytable (for ubuntu os) 
        or dnf install python-prettytable (for fedora os). 

3. Connect all the selected nic ports to traffic generator(IXIA,TREX,
   PKTGEN) ports(TG ports).
    2 TG 25g ports for FVL25G ports
    4 TG 10g ports for 4 NNT10G ports
    
Test Case : Single Core Performance Measurement
===============================================
1) Bind tested ports to igb_uio

2) Start testpmd::

     ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x6 -n 4 -- -i \
         --portmask=0xf  --txd=128 --rxd=128
        testpmd> start
        
3) Configure traffic generator to send traffic
    configure one below stream for each TG port
        dst mac: peer nic port mac
        src ip : random
        dst ip : random
        packet length : 64 byte
        
4)  check throughput and compare it with the expected value.

5)  for NNT10G, repeat above step 1-4 for txd=rxd=512,2048 separately.
    for FVL25G nic, just test txd=rxd=512,2048 following above steps 
    1-4.

6) Result tables for different NICs:

   FVL25G:
   +------------+---------+-------------+---------+---------------------+
   | Frame Size | TXD/RXD |  Throughput |   Rate  | Expected Throughput |
   +------------+---------+-------------+---------+---------------------+
   |     64     |   512   | xxxxxx Mpps |   xxx % |     xxx    Mpps     |
   |     64     |   2048  | xxxxxx Mpps |   xxx % |     xxx    Mpps     |
   +------------+---------+-------------+---------+---------------------+

   NNT10G:
   +------------+---------+-------------+---------+---------------------+
   | Frame Size | TXD/RXD |  Throughput |   Rate  | Expected Throughput |
   +------------+---------+-------------+---------+---------------------+
   |     64     |   128   | xxxxxx Mpps |   xxx % |       xxx  Mpps     |
   |     64     |   512   | xxxxxx Mpps |   xxx % |       xxx  Mpps     |
   |     64     |   2048  | xxxxxx Mpps |   xxx % |       xxx  Mpps     |
   +------------+---------+-------------+---------+---------------------+

Note : The values for the expected throughput may vary due to different
       platform and OS, and traffic generator, please correct threshold
       values accordingly. (the above expected values for FVL 25G and
       NNT10G  were got from the combination of Purly,Ubuntu 16.04, and
       traffic generator IXIA) 

Case will raise failure if actual throughputs have more than 1Mpps gap
from expected ones.