title: how to find the resolution of setitimer()?
body: <p>I needed a high resolution timer (at least having micro-second level resolution) and i found <code>setitimer()</code> can be set in micro-seconds level.</p>
  
  <pre><code>struct itimerval t;
  t.it_interval.tv_sec = 0;
  t.it_interval.tv_usec = 2;
  t.it_value.tv_sec = 0;
  t.it_value.tv_usec = 3;
  setitimer (ITIMER_REAL , &amp;t, NULL);
  </code></pre>
  
  <p>What i needed to know is <code>setitimer()</code> actual resolution in linux?</p>