[dts] L2FW fails with 'Not enough cores for performance!!!' (framework/etgen, py)

[Kevin Wilson]

Hi,
I am trying to run DTS L2FW performance between a tester and a DUT using DTS
(with scapy, not with IXIA) and I am getting the following error:
TestL2fwd: Test Case test_perf_l2fwd_performance Result FAILED: 'Not
enough cores for performance!!!'
and the DTS app terminates.
I located the error, and it is from packet_generator() method of
framework/etgen.py
What can be the reason for this  ?

Further details:
The execution.cfg file I am using is:
[Execution1]
crbs=IP adderss of DUT
drivername=igb_uio
test_suites=
       l2fwd
targets=
    x86_64-native-linuxapp-gcc
parameters=nic_type=niantic:perf=true

I have 2 machine: host A is the tester, and host B is the DUT.
Both have IXGBE nics, and each of these 2 nics have 2 ports.
On the tester, the PCI ids of the IXGBEs are 0000:04:00.0 and 0000:04:00.1
On the DUT, the PCI ids of the IXGBEs are 0000:06:00.0 and 0000:06:00.1
The IXGBEs are 8086:158b on both hosts

I have two configuration files:
conf/ports.cfg:
[DUT IP]
ports =
    pci=0000:06:00.0,peer=0000:04:00.0;
    pci=0000:06:00.1,peer=0000:04:00.1;


conf/crb.cfg:

[DUT IP]
dut_ip=DUT IP
dut_user=root
dut_passwd=dut_password
os=linux
tester_ip=TESTER IP
tester_passwd=tester_password
channels=4
bypass_core0=False

Both hosts have 4 cores (as is shown by "cat /proc/cpuinfo | grep -i processor")
I am running DTS by:
./dts --git=v17.11  --config-file=myConfig.cfg


Regards,
Kevin