PSDK QNX Datasheets
IO-PKT CPSW ethernet driver datasheet

Table of Contents

IO-PKT CPSW2G driver

Test Setup for QNX TI_J721S2_EVM_Board

Hardware Configuration Value
Processing Core A72
Core Frequency 2 GHz
Ethernet Interface Type RGMII at 1Gbps
Packet buffer memory DDR
Hardware checksum offload No
Scatter-gather TX No
Scatter-gather RX No
Software Configuration Value
OS QNX
TCP/IP stack IO-PKT network stack
Host PC tool version iperf

TCP Performance

On EVM QNX prompt:

iperf2 -s

Host PC commands::

iperf -c <evm_ip> -r

iperf -c <evm_ip> -d

Test Bandwidth (Mbps) CPU Load (%)
TCP RX 870 84
TCP TX 796 66
TCP Bidirectional RX/TX: 172/655 134

UDP Performance

On EVM QNX prompt:

iperf2 -u -s

Host PC commands::

  • Test with datagram length of 256B::

iperf -c <evm_ip> -u -l256 -b<bw> -r

where <bw> is 25M, 50M, 100M, etc

  • Test with datagram length of 512B::

iperf -c <evm_ip> -u -l512 -b<bw> -r

where <bw> is 25M, 50M, 100M, etc

  • Test with datagram length of 1470B (max)::

iperf -c <evm_ip> -u -b<bw> -r

where <bw> is 25M, 50M, 100M, etc

Test Datagram Length = 256B Bandwidth (Mbps) CPU Load (%) Packet Loss (%)
UDP RX & TX (50M) 49.7 & 52.4 14 & 23.5 1e+02
UDP RX & TX (100M) 97.9 & 105 31 & 23.5 1e+02
UDP RX & TX (500M) 6.67 & 129 48.5 & 22 1e+02
UDP RX & TX (1000M) 0.583 & 127 122 & 23 1e+02
Test Datagram Length = 512B Bandwidth (Mbps) CPU Load (%) Packet Loss (%)
UDP RX + TX (50M) 1.03 & 1.05 0 & 0 1e+02
UDP RX & TX (100M) 97.9 & 105 15.5 & 22.5 1e+02
UDP RX & TX (500M) 80.4 & 250 49 & 22.5 1e+02
UDP RX & TX (1000M) 15 & 251 48.5 & 22.5 1e+02
Test Datagram Length = 1470B Bandwidth (Mbps) CPU Load (%) Packet Loss (%)
UDP RX & TX (50M) 49.1 & 52.4 5 & 45 1e+02
UDP RX & TX (100M) 98.1 & 104 11.5 & 23.5 1e+02
UDP RX & TX (500M) 496 & 518 64 & 22 1e+02
UDP RX & TX (1000M) 250 & 648 81.5 & 22.5 1e+02

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