ESP32 Forum

Hi all,

I'm facing some issues with the ESP32-S3:

- Has Espressif ever tested the USB C CDC write/read speed?
- Has Espressif tested the MSC speed with eMMC?
- I'm using an ESP32-S3 connected to an EMMC04G-MK27-A01C. The write speed is 3.7MB/s and the read speed is 11.4MB/s. I'm not sure if this is the optimal speed.
- When testing MSC file copy, the write speed is 0.5MB/s and the read speed is 0.7MB/s. I need to know if this is the best speed possible. My application requires better write/read speeds.

Thanks for your support.

Best Regards,
Bao Doan.

Use larger buffers for data transfer to reduce the number of interruptions and context switches.

Hi, aliarifat794. Can you provide an example of using large buffers? I'm using an ESP32S3 with 2MB of PSRAM.