Exanic tcp is giving latency in milliseconds

[bornlibra23]

I am sending pre-prepared packets in a tight loop using the following set of functions
exasock_tcp_build_header
exasock_tcp_set_length
exasock_tcp_calc_checksum
exanic_transmit_frame
exasock_tcp_send_advance

I am getting a packet to packet latency or interarrival time in milliseconds.

Is this normal? I guess not. How do I fix this?

len=180 => new order
len=208 => modify order

[bornlibra23]

If I use preload instead then the difference is less than a microsecond.

[bornlibra23]

@abbradar @mgrosvenor @ahsanmirzab @ido @fluffy