title: udp sendto lasting too long (unusual times)
body: <p>In my application I'm sending data via an UDP socket with a rate of around 58MB/second. Most of the times it works fine however some time the sendto last too long and the time are grouped around 0.1, 0.2, 0.3 seconds (see immage below).
  My system is a linux system with kernel 2.6.32-24-server, the buffer for each send is 45000 bytes long. Do you have a clue on why sometime this happens?</p>
  <p><a href="https://i.stack.imgur.com/SfveG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SfveG.png" alt="enter image description here" /></a></p>