From be5f9ca0e1e4d3a2d1a06c39aa24874821b91cd1 Mon Sep 17 00:00:00 2001
From: CiaranG <ciaran@ciarang.com>
Date: Wed, 22 Jul 2009 09:25:27 +0100
Subject: [PATCH] Stop daemons using 100% CPU and hammering the DB server when
 the queue is empty (DBQueueManager-based only)

---
 lib/dbqueuemanager.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/dbqueuemanager.php b/lib/dbqueuemanager.php
index a37a8ffdf6..1df5af6c11 100644
--- a/lib/dbqueuemanager.php
+++ b/lib/dbqueuemanager.php
@@ -88,7 +88,9 @@ class DBQueueManager extends QueueManager
 
         do {
             $qi = Queue_item::top($queue);
-            if (!empty($qi)) {
+            if (empty($qi)) {
+	    	sleep(1);
+            } else {
                 $notice = Notice::staticGet('id', $qi->notice_id);
                 if (!empty($notice)) {
                     $result = $notice;