title: Java very large heap sizes
body: <p>Does anyone have experience with using very large heaps, 12 GB or higher in Java?</p>
  
  <ul>
  <li>Does the GC make the program unusable?</li>
  <li>What GC params do you use?</li>
  <li>Which JVM, Sun or BEA would be better suited for this?</li>
  <li>Which platform, Linux or Windows, performs better under such conditions?</li>
  <li>In the case of Windows is there any performance difference to be had between 64 bit Vista and XP under such high memory loads?</li>
  </ul>