fine tuning
diff --git a/test/cpp/qps/smoke_test.cc b/test/cpp/qps/smoke_test.cc
index 85dca1f..a6b5ef6 100644
--- a/test/cpp/qps/smoke_test.cc
+++ b/test/cpp/qps/smoke_test.cc
@@ -55,7 +55,7 @@
   server_config.set_enable_ssl(false);
   server_config.set_threads(1);
 
-  auto result = RunScenario(client_config, 1, server_config, 1, 5, 15);
+  auto result = RunScenario(client_config, 1, server_config, 1, 30, 120);
 
   gpr_log(GPR_INFO, "QPS: %.1f",
           result.latencies.Count() /
@@ -84,7 +84,7 @@
   server_config.set_enable_ssl(false);
   server_config.set_threads(1);
 
-  auto result = RunScenario(client_config, 1, server_config, 1, 5, 15);
+  auto result = RunScenario(client_config, 1, server_config, 1, 30, 120);
 
   gpr_log(GPR_INFO, "QPS: %.1f",
           result.latencies.Count() /
@@ -114,7 +114,7 @@
   server_config.set_enable_ssl(false);
   server_config.set_threads(1);
 
-  auto result = RunScenario(client_config, 1, server_config, 1, 5, 15);
+  auto result = RunScenario(client_config, 1, server_config, 1, 30, 120);
 
   gpr_log(GPR_INFO, "QPS: %.1f",
           result.latencies.Count() /
@@ -144,7 +144,7 @@
   server_config.set_enable_ssl(false);
   server_config.set_threads(4);
 
-  auto result = RunScenario(client_config, 1, server_config, 1, 10, 30);
+  auto result = RunScenario(client_config, 1, server_config, 1, 30, 120);
 
   auto qps = 
       result.latencies.Count() /
diff --git a/test/cpp/qps/smoke_test.sh b/test/cpp/qps/smoke_test.sh
index ba7f0a4..431a297 100755
--- a/test/cpp/qps/smoke_test.sh
+++ b/test/cpp/qps/smoke_test.sh
@@ -8,7 +8,7 @@
 
 killall qps_worker || true
 
-config=opt
+config=dbg
 
 NUMCPUS=`python2.7 -c 'import multiprocessing; print multiprocessing.cpu_count()'`