Regarding the low network rate measured by iperf3 in the hosted_ng SPI of ESP32C5

[JoeyLi-dev]

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Issue or Suggestion Description

I am using the i.MX93 to drive the ESP32C5 with an SPI frequency of 25 MHz, and I have found that the network rate is very low when testing it with iperf3. Is this normal?

Best Regards.

[SohKamYung-Espressif]

Hello @JoeyLi-dev

Question: Are you using ESP-Hosted-FG or ESP-Hosted-NG?

Next, please test the raw throughput you are getting, to make sure it is not a ESP-Hosted SPI transport issue.

• for ESP-Hosted-FG, see this documentation: https://github.com/espressif/esp-hosted/blob/master/esp_hosted_fg/docs/Linux_based_host/Raw_TP_Testing.md
• for ESP-Hosted-NG, see this documentation: https://github.com/espressif/esp-hosted/blob/master/esp_hosted_ng/docs/Raw_TP_Testing.md

[JoeyLi-dev]

Thank you for your reply. I am using ESP-Hosted-NG, and I have separately tested rawtp_esp_to_host and rawtp_host_to_esp now. The test results are as follows:

Best Regards.

[SohKamYung-Espressif]

Can you take a look at this, @kapilkedawat