rt1170evkb 1G ethernet speed

[seobi]

Hi, I am currently preparing to perform an iPerf test and implement UDP transmission using 1Gbps Ethernet.

Using the lwip_iper_bm_cm7 provided in SDK version 2.16 for my own testing, the maximum speed displayed is only around 430 Mbps. (6: UDP client mode (TX only test))

In this case, I modified IPERF_UDP_CLIENT_RATE to (900 * 1024 * 1024), but the speed still does not exceed 430 Mbps.

I tested by modifying the ENET_TXBD_NUM value, but there was no significant change.

I want to maximize UDP performance.

Could you help me identify the necessary symbol values?

Additionally, the receiver often experiences "Lost" packets. Is it possible to fully utilize 1 Gbit performance?

Best regards,

[seobi · Accepted solution]

I found the issue.
It was a problem with jperf.

The issue occurs in jperf 2.0.0, but it works fine in jperf 2.0.2.

Thank you for your help.

[seobi]

As per your observation, the bandwidth value shown on the board appears high at 937552 Kbps, but when checked on Windows, it shows approximately 530 Mbps.

When I sequentially increase the IPERF_UDP_CLIENT_RATE from 100 by increments of 100, it displays correctly up to 500, but from 600 to 900, it doesn't go above 530 Mbps.

Am I conducting the test incorrectly? I connected the board and the notebook directly.

I am attaching the log.

Best regards,

[Sam_Gao]

Hi @seobi 

Thansk for your question, would you please clairfy debug trace log to me?

My trace log as below seems workable.

Default setting(IPERF_UDP_CLIENT_RATE (100 * 1024 * 1024) )

************************************************
IPERF example
************************************************
IPv4 Address : 192.168.0.102
IPv4 Subnet mask : 255.255.255.0
IPv4 Gateway : 192.168.0.100
************************************************
Please select one of the following modes to run IPERF with:

0: TCP server mode (RX test)
1: TCP client mode (TX only test)
2: TCP client reverse mode (RX only test)
3: TCP client dual mode (TX and RX in parallel)
4: TCP client tradeoff mode (TX and RX sequentially)
5: UDP server mode (RX test)
6: UDP client mode (TX only test)
7: UDP client reverse mode (RX only test)
8: UDP client dual mode (TX and RX in parallel)
9: UDP client tradeoff mode (TX and RX sequentially)

Enter mode number: 6
Ideal frame delay: 112 us
Send 8 frame(s) once per 1000 us
Press SPACE to abort the test and return to main menu
-------------------------------------------------
UDP_DONE_CLIENT (TX)
Local address : 192.168.0.102 Port 49153
Remote address : 192.168.0.100 Port 5001
Bytes Transferred 121126208
Duration (ms) 10501
Bandwidth (kbitpsec) 92277

Modify #define IPERF_UDP_CLIENT_RATE (1000 * 1024 * 1024) /* 1000 Mbit/s */

Enter mode number: 6
Ideal frame delay: 11 us
Send 90 frame(s) once per 1000 us
Press SPACE to abort the test and return to main menu
-------------------------------------------------
 UDP_DONE_CLIENT (TX) 
 Local address : 192.168.0.102  Port 49153 
 Remote address : 192.168.0.100  Port 5001 
 Bytes Transferred 1230056100 
 Duration (ms) 10501 
 Bandwidth (kbitpsec) 937096 

B.R,

Sam

[seobi]

The board is evkbrt1170 and it goes up to 530Mbps.