Added a small benchmark test with a small performance improvement

src/test/java/redis/clients/jedis/tests/benchmark/GetSetBenchmark.java

@@ -0,0 +1,33 @@
+package redis.clients.jedis.tests.benchmark;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+import java.util.Calendar;
+
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.JedisException;
+
+public class GetSetBenchmark {
+    private static final int TOTAL_OPERATIONS = 100000;
+
+    public static void main(String[] args) throws UnknownHostException,
+	    IOException, JedisException {
+	Jedis jedis = new Jedis("localhost");
+	jedis.connect();
+	jedis.auth("foobared");
+
+	long begin = Calendar.getInstance().getTimeInMillis();
+
+	for (int n = 0; n <= TOTAL_OPERATIONS; n++) {
+	    String key = "foo" + n;
+	    jedis.set(key, "bar" + n);
+	    jedis.get(key);
+	}
+
+	long elapsed = Calendar.getInstance().getTimeInMillis() - begin;
+
+	jedis.disconnect();
+
+	System.out.println(((1000 * 2 * TOTAL_OPERATIONS) / elapsed) + " ops");
+    }
+}