title: How to profile memory usage & performance with Instruments?
body: <p>Of all the Instruments Trace Templates, I love using:</p>
  
  <ul>
  <li>Zombies to detect where an object is getting over-released, great for debugging <code>EXEC_BAD_ACCESS</code> errors.</li>
  <li>Leaks to detect memory leaks.</li>
  <li>Core Animation w Color Blended Layers to detect frame rate &amp; translucent subviews, great for smoothing up <code>UITableView</code> scrolling.</li>
  </ul>
  
  <p>I always hear people saying to profile my app's memory usage &amp; performance.</p>
  
  <ol>
  <li>Why should I profile memory usage &amp; performance? My app runs fine.</li>
  <li>How do I do it?</li>
  </ol>
  
  <p>I've used Allocations and see that my iPhone app starts at 1 MB total allocated memory and grows to 5 MB after normal usage. What is too high amount of memory usage on the iPhone? iPad? Mac?</p>