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Network throughput performance of C6657

Hello,

We got the below test result which is quite slow on C6657 with Benchmark using iperf of PC host. It is a custom board, but the HW for network part is same as TMDXEVM6657L. I'd like to increase the network throughput performance and some questions are as below.

Test Result (TCP)

- Non-copy mode using recvnc socket function: Less than 100Kbit/s

- read socket function / transmit throughput: 15~18Mb/s

Questions.

1.  What network throughput speed of TMDXEVM6657L is expected by TI?

2. Is this issue come from lack of HW Ethernet engine(NETCP) on C6657?

3. How I can increase the speed?

4. Please guide how to test NDK performance on PC including setup and tools.

I found a similar issue that I have on below links, but couldn't find clear answer.

e2e.ti.com/.../527326

e2e.ti.com/.../1918594

Please refer to below test environment.

MCSDK 2.1.1.4

XDCtools 3.25.04.88

NDK 2.22.2.16

SYS/BIOS 6.35.04.50

Running project in Static IP mode

Connection to PC with 100Mbps link

Thanks,

Shaka