Hi

I would like to saturate a 1 GBit/s link with data, which statically allocated in my program. So I know what to send and
 when. I can create according to the manual up to 1024 messages with sendmmsg. 

But I am out of buffers already when I send 20 messages (7003 bytes). Sending 10 messages at once works.

How can I debug this and where can I increase the  memory/buffers available for this operation? So that I can actually 
send the promised 1024 UDP messages at once?

Is my expectation correct that sendmmsg only returns once the DMA for this bunch of messages is done?

Kind Regards
 Thorsten