title: Java: Set -Xms same to -XX:PermSize or -XX:MaxPermSize?
body: <p>In Java I have seen that some people set <code>-Xms</code> same as <code>-XX:PermSize</code> while some others set <code>-Xms</code> same as <code>-XX:MaxPermSize</code></p>
  
  <p>Which approach makes sense and why?</p>
  
  <p>Thanks</p>