nRF9160 throughput

[austinaoe]

As a quick and dirty way to test throughput, I am sending non-confirm-able coap POSTs to my coap server and time stamping them.

Only 3 packets per second get sent.  The other packets fail with the prink error message in the cope snippet below.  Is there something I'm doing wrong here?

while (1) {
                if (client_post_send() != 0) {
                        printk("Failed to send POST request.\n");
                }
		
		k_sleep(K_MSEC(100));
	}

[austinaoe]

After turning on the Coap Trace, I can see now the coap_alloc_fn is failing in the function internal_coap_message_send

buffer = coap_alloc_fn(request_length);
	if (buffer == NULL) {
		COAP_TRC("buffer alloc error = 0x%08lX!",
			 (unsigned long)err_code);
		COAP_EXIT();
		return err_code;
	}

[Martin Lesund]

Hi Austin,

What NCS tag have you based your sample on?

What is the modem firmware version you are running on your device?

Can you enable logging and increase the logging level to DEBUG to get some additional information out?