title: What does option limit in tc netem mean and do?
body: <p>I'm trying to emulate slow net link with command <code>tc</code>. I use <code>netem</code> to emulate delay and packet loss and htb to emulate narrow bandwidth, but I find there is a limit option in <code>netem</code>, what does this option do? will it affect the final bandwidth?</p>
  
  <p>I googled it and find something in <a href="http://manpages.ubuntu.com/manpages/raring/man8/tc-netem.8.html" rel="noreferrer">http://manpages.ubuntu.com/manpages/raring/man8/tc-netem.8.html</a></p>
  
  <p>which says: </p>
  
  <blockquote>
    <p>limits the effect of selected options to the indicated number of next packets.</p>
  </blockquote>
  
  <p>But I still can not understand what it does.</p>