title: How Is the Default Max Permgen Size Defined:
body: <p>My understanding from what documentation I can find and StackOverflow questions I can find is that the default max permgen size is 64MB.</p>
  
  <p>I am running an application out of Eclipse Kepler x86, Windows 7 x64, Java 7 with no <code>-XX:MaxPermSize</code> flags set. The application maxes out at ~82 MB before a Permgen OutOfMemory error. I do not understand where this ~82 MB number is coming from. A reference to up-to-date technical documentation on how this default max perm gen size is derived would be most appreciated.</p>
  
  <p>Note: This is not a question on how to debug/fix PermGen OutOfMemoryErrors.</p>