Add the learning notes

OPC_Client_Utgard_Performance/src/main/java/com/freud/opc/utgard/perf/PublishOPCPerfTest.java

@@ -8,6 +8,7 @@ import java.util.concurrent.Executors;
 import org.apache.log4j.Logger;
 import org.openscada.opc.lib.da.AccessBase;
 import org.openscada.opc.lib.da.Async20Access;
+import org.openscada.opc.lib.da.AutoReconnectController;
 import org.openscada.opc.lib.da.DataCallback;
 import org.openscada.opc.lib.da.Item;
 import org.openscada.opc.lib.da.ItemState;
@@ -34,8 +35,9 @@ public class PublishOPCPerfTest {
 
 		Server server = new Server(config(),
 				Executors.newSingleThreadScheduledExecutor());
+		AutoReconnectController controller = new AutoReconnectController(server);
 
-		server.connect();
+		controller.connect();
 
 		AccessBase access = new Async20Access(server, 1000, true);
 
@@ -51,7 +53,7 @@ public class PublishOPCPerfTest {
 		}
 
 		access.bind();
-		Thread.sleep(1000);
+		Thread.sleep(2 * 24 * 60 * 60 * 1000);
 		access.unbind();
 		long end = System.currentTimeMillis();
 		LOGGER.info("EndDate[" + new Date() + "],CurrentMillis:" + end);

README.md

@@ -4,3 +4,17 @@ OPC_Client
 OPC client examples include [utgard](http://openscada.org/projects/utgard/) and [jeasyopc](http://sourceforge.net/projects/jeasyopc/?source=navbar)
 
 Also for the real produce environment, there's two example for <b>performance</b> test.
+
+<h2>Next Step</h2>
+<ul>
+	<li>继续压力测试</li>
+	<li>10W点下异步的时间</li>
+	<li>异步下多少线程数是最好的</li>
+	<li>发布订阅实现读取</li>
+	<li>场景选择</li>
+	<li>监测点与场景及thread数目选择问题</li>
+</ul>
+
+<h2>现在依然存在的问题</h2>
+1. 发布订阅的实现
+2. 异步的源码实现