TDA4VM: Performance number of EthFW client running on MCU2_1

Hi

Can you confirm what is the issue you are facing - are you reporting a lower performance for UDP (please clarify if it Rx vs Tx) when run iperf on a different R5 core. can you also share  comparison data. 

Also include CPU load information along with the measured performance data

Overall when using a full fledged networking stack like lwip on R5 core, one cannot sustain >300Mbps of throughput.

If higher throughput data needs to handled, you will need an application specific fast implementation that eliminates the overhead of general purpose network stack(avoid copies, overhead associated with layering/context switches etc)

Regards

sriram

Hi Srirama,

Thanks for the response. Ethfw client is migrated to MCU1_0. And the UDP iperf RX performance is low. It is around 26 Mbps. I will get you the CPU numbers. Does TI have UDP performance number from Ethfw client other than linux. Looks like the numbers shown above have PHY also assigned to the core. 

Hi Srirama,

Thanks for the response. Ethfw client is migrated to MCU1_0. And the UDP iperf RX performance is low. It is around 26 Mbps. I will get you the CPU numbers. Does TI have UDP performance number from Ethfw client other than linux. Looks like the numbers shown above have PHY also assigned to the core. 

Hi Dwarakesh,

Could you double check the compiler option in the MCU1_0 build and make sure the compiler optimization is enabled?

In addition, please also make sure the cache is enabled.

Regards,
Stanley

Hi Stanley,

The CPU load is 100%. We are using the vision_apps/platform configuration and I believe cache is enabled for the memory. Complier Optimization, I will check Can you please let me know the numbers checked  when Ethfw Client is used? Even in EVM I get the similar numbers 23Mbps. 

Hi Stanley,

1. We also tried enabling the -mthumb and -O3 flags to vision_apps/concerto/compilers/tiarmcgt_llvm.mak , under $(_MODULE)_COPT). Still we see similar numbers of performance in EVM with 23Mbps.

2. What is the test run specifically for UDP RX test ? Is it UDP perf test of the lwip examples ?

You can run LwIP example and use iperf2 to test performance.

https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/08_02_00_05/exports/docs/pdk_jacinto_08_02_00_21/docs/userguide/jacinto/modules/enet.html

Regards,

Stanley

Thanks Stanley,

We saw in add on package performance for UDP in SDK 8.1 to be having issue. When we tried in 8.2 SDK, we are seeing 75Mbps as opposed to 8.1 SDK. Can you please throw light on this error. Also if there are patches to back port to 8.1 for this performance fix, please do let me know