AM62Px MCU+ SDK  11.01.00
Ethernet Performance on AM62P

Introduction

This section provides the performance numbers of Ethernet drivers using CPSW peripheral in MCU+ SDK

Setup Details

SOC Details Values
Core R5F
Core Operating Speed 800 MHz
Memory Type DDR
Cache status Enabled
EVM Type AM62PX-LP

Layer 2 Performance

Latency defination

Configuration Details

Configuration Value
Processing Core Main R5F0 Core 0
Core Frequency 800 MHz
Ethernet Interface Type RGMII at 1 Gbps
Packet buffer memory DDR (uncached)
Scatter-gather TX Yes
Scatter-gather RX Yes
UDMA interrupt pacing NO
RTOS FreeRTOS
RTOS application Modified Enet CPSW Loopback Example
example
Host PC tool version nload
Rx packet length 200 B
Tx packet length 200 B


Layer 2 Latency

Parameter CPU<->CPSW
Latency Value (ns)
PHY (DP83867IR) Latency
(from datasheet) in ns
Total Latency
(ns)
RX Latency 20000 288 20288
TX Latency 10000 384 10384

TCP/IP Performance

Configuration Details

Configuration Value
Processing Core WKUP R5F0 Core 0
Core Frequency 800 MHz
Ethernet Interface Type RGMII at 1 Gbps
Packet buffer memory DDR (cached)
Hardware checksum offload Enabled on both Tx and Rx Side
Scatter-gather TX Yes
Scatter-gather RX Yes
UDMA interrupt pacing Yes (realized with timer based interrupt pacing)
RTOS FreeRTOS
RTOS application Enet Lwip CPSW Example in examples
TCP/IP stack LwIP version STABLE-2_2_0_RELEASE
Host PC tool version iperf v2.0.10
Number of Rx packet buffers 32
Number of Tx packet buffers 16


TCP Throughput

Test Bandwidth
(Mbps)
CPU Load
(%)
TCP RX9338
TCP TX9370
TCP BidirectionalRX=87
TX=85.4
97.5

Host PC commands:

  • TCP Rx and Tx (Sequential):
    $iperf -c <evm_ip> -r
  • TCP Rx and Tx (Bidirectional):
    $iperf -c <evm_ip> -d

UDP Throughput

Test Datagram Length = 64B Datagram Length = 256B Datagram Length = 512B Datagram Length = 1470B
Bandwidth (Mbps)CPU Load (%)Packet Loss (%) Bandwidth (Mbps)CPU Load (%)Packet Loss (%) Bandwidth (Mbps)CPU Load (%)Packet Loss (%) Bandwidth (Mbps)CPU Load (%)Packet Loss (%)
UDP RX 5300.0 5150.0 25340.01 50160.0
10580.15 15380.02 50650.2 65380.01
15840.2 25610.5 65820.3 100560.08
UDP RX (Max) 171001.5 42970.9 80990.5 17799.80.33
UDP TX (Max) 261000.0 641000.0 1301000.0 3721000.0

Host PC commands:

  • Test with datagram length of 64B:
    $iperf -c <evm_ip> -u -l 64 -b <bw> -r
    where <bw> is 5M, 10M, 15M, etc
  • Test with datagram length of 256B:
    $iperf -c <evm_ip> -u -l 256 -b <bw> -r
    where <bw> is 25M, 50M, 100M, etc
  • Test with datagram length of 512B:
    $iperf -c <evm_ip> -u -l 512 -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

See Also

Ethernet And Networking Enet Lwip CPSW Example