title: How would you interpret the following innotop output?
body: <p>I'm trying to optimize an application running a MySQL with the InnoDB storage engine.</p>
  
  <p>When running <code>innotop</code> in the live environment I get the following output:</p>
  
  <pre><code>When   Load  QPS     Slow  QCacheHit  KCacheHit  BpsIn   BpsOut 
  Now    0.00   87.80     0     41.21%    100.00%  11.51k  836.42k
  Total  0.00  105.50   190     15.04%     99.34%  13.23k  692.85k
  </code></pre>
  
  <p><code>When</code>, <code>Load</code>, <code>QPS</code> and <code>Slow</code> are self-explanatory. </p>
  
  <p>But what about <code>QCacheHit</code>, <code>KCacheHit</code>, <code>BpsIn</code> and <code>BpsOut</code>? In general, what are considered "okay" values for those, and when should I start worrying?</p>