title: What is "Stack Walking"
body: <p>It's a phrase I've been hearing a lot recently as I've been trying to improve performance of my application.</p>
  
  <p>See <a href="https://stackoverflow.com/a/729436/4714970">here</a> and <a href="https://stackoverflow.com/a/9754873/4714970">here</a> for examples of what I mean.</p>
  
  <p>Usually the way it's mentioned is something like this: "It's slow because it involves a <code>stack walk</code>"</p>
  
  <p>What does a <code>stack walk</code> mean/ what does it mean to <code>walk the stack</code>?</p>