title: How to set ssthresh value in tcp
body: <p>I am trying to start TCP slow start congestion algoritham in my raspberry device. As it documented in RFC 2581, it needs to set ssthresh value greater than the congestion window (cwnd). So I have chnaged /sys/module/tcp_cubic/parameters# sudo nano initial_ssthresh value to 65000 and cwnd was set to 10 ( checked with ss -i). After this settings I tried to send big packet from raspberry of size 19000 bytes. According to slow start it first needs to send to the destination device 2 packtes and then 4, then 8 ..etc. </p>
  
  <p>But its not happening at raspberry. it sending me 10 packtes. Did I do something worng ?.  In this case How can i start slow start algoritham.  </p>
  
  <p>Thanks</p>