Take bigger bites of rendering

themes/slashcode/tasks/freshenup.pl

@@ -85,12 +85,13 @@
 	# while we do them piecemeal.  So instead, we try to take a
 	# big bite out of what needs to be done while there are stories
 	# within the latest 1000 that need this, and then afterwards,
-	# take a smaller bite every 10 minutes at a do_all.
+	# take a smaller bite every 10 minutes at a do_all.  These
+	# actually get processed pretty fast.
 	$stories = $slashdb->getSRDsWithinLatest(1000);
 	if (!@$stories) {
 		if ($do_all) {
 			# Try the smaller bite.
-			$stories = $slashdb->getSRDs(20);
+			$stories = $slashdb->getSRDs($max_stories);
 		} else {
 			# Either there's nothing to be done or there's
 			# nothing urgent enough to be done.  Leave the