In Java memory management, what does 'PS' stand for?
<p>Whenever I see reference to memory in Java, the various spaces are always prefixed with 'PS'.  What does 'PS' mean?  It's starting to bother me... my only guess so far is 'pool space', but that would be redundant.</p>

<p>Examples:</p>

<ul>
<li>PS Eden Space</li>
<li>PS Survivor Space</li>
<li>PS Tenured Space (Old Generation)</li>
<li>PS Perm Gen (Permanent Generation)</li>
</ul>
