title: Xcode Instrument: how to measure network traffic using activity monitor instrument?
body: <p>By the <a href="https://developer.apple.com/library/ios/documentation/AnalysisTools/Reference/Instruments_User_Reference/NetworkActivityMonitorInstrument/NetworkActivityMonitorInstrument.html" rel="nofollow noreferrer">instrument reference</a>, the Activity Monitor instrument can inspect network traffics with these measurements:</p>
  
  <pre><code>Net Packets In  
  The total number of network packets received.  
  Net Bytes In  
  The total number of network bytes received.  
  Net Packets Out  
  The total number of network packets sent.  
  Net Bytes Out  
  The total number of network bytes sent.  
  Net Packets In Per Second  
  The number of packets received each second.  
  Net Packets Out Per Second  
  The number of packets sent each second.  
  Net Bytes In Per Second  
  The number of bytes received each second.  
  Net Bytes Out Per Second  
  The number of bytes sent each second.  
  </code></pre>
  
  <p>The document shows that if I click at any time of the recording, I should see statics like this:
  <img src="https://i.stack.imgur.com/og68K.png" alt="enter image description here"></p>
  
  <p>but when I tap at any time of the recording, I don't see the statics, my view is like this:
  <img src="https://i.stack.imgur.com/Zezxm.png" alt="enter image description here"></p>
  
  <p>I don't see the statics, it show only graph.<br>
  How can I know how much data is sent/received?</p>