diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 345a30050c..150c7566b3 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -83,6 +83,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
     private ConnectionHolder[]                                                   connections;
     private int                                                                  count                       = 0;
     private int                                                                  activeCount                 = 0;
+    private long                                                                 idleCheckCount              = 0;
 
     // threads
     private CreateConnectionThread                                               createConnectionThread;
@@ -703,6 +704,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                                 } else {
                                     evictList.add(idleConnection);
                                 }
+                                idleCheckCount++;
                             }
                         }
                     } finally {
diff --git a/src/test/java/com/alibaba/druid/pool/benckmark/Case3.java b/src/test/java/com/alibaba/druid/pool/benckmark/Case3.java
index 1055f93a83..75b4deea55 100644
--- a/src/test/java/com/alibaba/druid/pool/benckmark/Case3.java
+++ b/src/test/java/com/alibaba/druid/pool/benckmark/Case3.java
@@ -27,6 +27,7 @@ public class Case3 extends TestCase {
     private int     TEST_COUNT       = 3;
     final int       LOOP_COUNT      = 1000 * 1;
     private boolean testOnBorrow    = true;
+    private String connectionProperties = "bigStringTryClob=true;clientEncoding=GBK;defaultRowPrefetch=50;serverEncoding=ISO-8859-1";
 
     protected void setUp() throws Exception {
         jdbcUrl = "jdbc:fake:dragoon_v25masterdb";
@@ -41,7 +42,7 @@ public class Case3 extends TestCase {
     
     public void test_perf() throws Exception {
         for (int i = 0; i < 10; ++i) {
-            //druid();
+            druid();
             dbcp();
         }
     }
@@ -60,6 +61,7 @@ public class Case3 extends TestCase {
         dataSource.setPassword(password);
         dataSource.setValidationQuery(validationQuery);
         dataSource.setTestOnBorrow(testOnBorrow);
+        dataSource.setConnectionProperties(connectionProperties);
 
         for (int i = 0; i < TEST_COUNT; ++i) {
             p0(dataSource, "druid", threadCount);
@@ -81,6 +83,7 @@ public class Case3 extends TestCase {
         dataSource.setPassword(password);
         dataSource.setValidationQuery(validationQuery);
         dataSource.setTestOnBorrow(testOnBorrow);
+        dataSource.setConnectionProperties(connectionProperties);
 
         for (int i = 0; i < TEST_COUNT; ++i) {
             p0(dataSource, "dbcp", threadCount);