TASS Belgium
UDP Tx Official Benchmark
Dependencies: PicoTCP lpc1768-picotcp-eth mbed-rtos mbed
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.
The result:
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] > 0 and index > 0:
lost_packets += _index[0] - index -1
index = _index[0]
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
Import librarylpc1768-picotcp-eth
A PicoTCP driver for the lpc1768 mbed board
Last commit 16 Jan 2014 by 
TASS Belgium
Import libraryPicoTCP
Free (GPLv2) TCP/IP stack developed by TASS Belgium
Last commit 28 Jan 2016 by 
Daniele Lacamera
Import librarymbed-rtos
Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.
Last commit 04 Jul 2017 by 
mbed official
Revision 0:ce982aead3d2, committed 2013-10-03
- Comitter:
- tass
- Date:
- Thu Oct 03 06:22:54 2013 +0000
- Commit message:
- UDP Tx Official Benchmark
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PicoTCP.lib Thu Oct 03 06:22:54 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/daniele/code/PicoTCP/#6764a53bb6e6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lpc1768-picotcp-eth.lib Thu Oct 03 06:22:54 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/tass/code/lpc1768-picotcp-eth/#1ef61e7465a5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Oct 03 06:22:54 2013 +0000
@@ -0,0 +1,49 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+#define BUFFER_SIZE 1024
+#define NUMBER_OF_SECONDS (20*1000u) // 20 seconds
+
+#define REMOTE_IP "192.168.100.2"
+#define REMOTE_PORT 2327
+#define NUMBER_OF_FRAMES 1000
+
+int main() {
+
+ EthernetInterface eth;
+ eth.init();
+ eth.connect();
+
+ printf("Started UDP Fast Test...\n");
+
+ UDPSocket server;
+ Endpoint endp;
+ char buffer[BUFFER_SIZE];
+
+ printf("Remote endpoint @ %s:%d\n",REMOTE_IP,REMOTE_PORT);
+ endp.set_address(REMOTE_IP,REMOTE_PORT);
+
+ printf("Binding result :%d\n", server.bind(REMOTE_PORT));
+
+ server.bind(REMOTE_PORT);
+ server.set_blocking(false,1000);
+
+ printf("Started sending packet flood...\n");
+
+ while(true)
+ {
+ int cnt = 0;
+ static uint32_t counter = 0;
+ while(cnt<5)
+ {
+ memcpy(buffer,&counter,sizeof(counter));
+ int size = server.sendTo(endp,buffer,sizeof(buffer));
+ counter++;
+ cnt++;
+ }
+ Thread::wait(1);
+ }
+
+ server.close();
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Thu Oct 03 06:22:54 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#ee87e782d34f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Oct 03 06:22:54 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f \ No newline at end of file