UDP Tx Official Benchmark
This project represents a the official UDP Tx speed Benchmark for the PicoTCP library.
The mbed board is sending 5 frames per milisecond (each frame has 1024 bytes of payload) to a linux host(directly connected). Each time we send a packet, a counter is increased and sent to the receiver, so it can measure the number of packets that were lost during transmission.
20 seconds Tx Statistics
Total bytes received : 102404096
UDP Speed : 39.064 Mbit/s
Packet loss : 0.000000 %
The python script used (which you should rename it to PicoTCP_Official_UDP_Tx_Benchmark.py)
import socket from struct import unpack import fcntl, os import errno import random, string from time import time, sleep ECHO_SERVER_ADDRESS = "192.168.100.12" NUMBER_OF_SECONDS = 20 LOCAL_SERVER_PORT = 2327 MEGA = 1024*1024. LEN_PACKET = 1024 data = ''.join('\0' for _ in range(LEN_PACKET)) s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,socket.IPPROTO_UDP) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(('', LOCAL_SERVER_PORT)) print "Started receiving data...." print "Time : %d " % time() while True: start = time() counter = 0 size = 0 lost_packets = 0 index = -1 while start + NUMBER_OF_SECONDS > time(): data, addr = s.recvfrom(LEN_PACKET) counter+=1 size += len(data) _index = unpack("<I",data[:4]) if _index > 0 and index > 0: lost_packets += _index - index -1 index = _index print "20 seconds Tx Statistics" print "Total bytes received : %d" % size print "UDP Speed : %.3f Mbit/s" % ((size*8.)/(MEGA * NUMBER_OF_SECONDS)) print "Packet loss : %.6f %%" % (100. * lost_packets/(lost_packets+counter))
This test is based on the following libraries
Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.