change version & test

src/test/java/com/alibaba/druid/pool/TestMockPerf.java

@@ -2,6 +2,7 @@ package com.alibaba.druid.pool;
 
 import java.sql.Connection;
 import java.sql.Statement;
+import java.util.concurrent.CountDownLatch;
 
 import junit.framework.TestCase;
 
@@ -16,24 +17,39 @@ public class TestMockPerf extends TestCase {
         dataSource.setMinIdle(3);
         dataSource.setMaxActive(20);
         dataSource.setDbType("mysql");
-        dataSource.setFilters("wall");
+        dataSource.setFilters("stat");
         dataSource.init();
     }
 
     public void test_perf() throws Exception {
+        final CountDownLatch latch = new CountDownLatch(10);
         for (int i = 0; i < 10; ++i) {
-            long startMillis = System.currentTimeMillis();
-            perf();
-            long millis = System.currentTimeMillis() - startMillis;
-            System.out.println("millis : " + millis);
+            Thread thread = new Thread() {
+                public void run() {
+                    try {
+                        long startMillis = System.currentTimeMillis();
+                        perf();
+                        long millis = System.currentTimeMillis() - startMillis;
+                        System.out.println("millis : " + millis);
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    } finally {
+                        latch.countDown();
+                    }
+                }
+            };
+            thread.start();
+     
         }
+        
+        latch.await();
     }
 
     public void perf() throws Exception {
         for (int i = 0; i < 1000 * 1000; ++i) {
             Connection conn = dataSource.getConnection();
             Statement stmt = conn.createStatement();
-            stmt.execute("SELECT 1");
+            stmt.execute("SELECT " + i % 1000);
             stmt.close();
             conn.close();
         }