Index: main/src/bin/run.sh
===================================================================
--- main/src/bin/run.sh	(revision 69565)
+++ main/src/bin/run.sh	(working copy)
@@ -88,7 +88,15 @@
 
 	ulimit -n $MAX_FD
 	if [ $? -ne 0 ]; then
-	    warn "Could not set maximum file descriptor limit: $MAX_FD"
+            if [ "$darwin" = "true" ]; then
+                MAX_FD=`sysctl kern.maxfilesperproc | awk ' { print $3 }`
+                ulimit -n $MAX_FD
+                if [ $? -ne 0 ]; then
+	           warn "Could not set maximum file descriptor limit: $MAX_FD"
+                fi
+            else
+	        warn "Could not set maximum file descriptor limit: $MAX_FD"
+            fi
 	fi
     else
 	warn "Could not query system maximum file descriptor limit: $MAX_FD_LIMIT"