title: perf.data file has no samples
body: <p>I am using perf 3.0.4 on ubuntu 11.10. Its record command works well and displays on terminal 256 samples collected. But when I make use of <strong>perf report</strong> , it gives me the following error:</p>
  
  <pre><code>perf.data file has no samples
  </code></pre>
  
  <p>I searched a lot for the solution but no success yet.</p>