diff --git a/c/include/nnstreamer-tizen-internal.h b/c/include/nnstreamer-tizen-internal.h
index a24632dc..dd53dc85 100644
--- a/c/include/nnstreamer-tizen-internal.h
+++ b/c/include/nnstreamer-tizen-internal.h
@@ -52,7 +52,7 @@ typedef struct {
   int invoke_async;              /**< The sub-plugin must support asynchronous output to use this option. If set to TRUE, the sub-plugin can generate multiple outputs asynchronously per single input. Otherwise, only synchronous single-output is expected and async callback is ignored. */
   ml_tensors_data_cb invoke_async_cb; /**< Callback function to be called when the sub-plugin generates an output asynchronously. This is only available when invoke_async is set to TRUE. */
   void *invoke_async_pdata;      /**< Private data to be passed to async callback. */
-  int latency_mode;              /**< 1 - log invoke latency, 0 (default) - do not log */
+  int latency_mode;              /**< True to enable latency log. */
 } ml_single_preset;
 
 /**
diff --git a/c/src/ml-api-inference-single.c b/c/src/ml-api-inference-single.c
index 51eb1455..d31b8840 100644
--- a/c/src/ml-api-inference-single.c
+++ b/c/src/ml-api-inference-single.c
@@ -2099,7 +2099,7 @@ _ml_validate_model_file (const char *const *model,
   }
 
   /** @todo Make sure num_models is correct for each nnfw type */
-  switch (*nnfw) {
+  switch ((int) *nnfw) {
     case ML_NNFW_TYPE_NNFW:
     case ML_NNFW_TYPE_TVM:
     case ML_NNFW_TYPE_ONNX_RUNTIME:
diff --git a/c/src/ml-api-service-extension.c b/c/src/ml-api-service-extension.c
index e8cecc20..7a964eec 100644
--- a/c/src/ml-api-service-extension.c
+++ b/c/src/ml-api-service-extension.c
@@ -245,6 +245,38 @@ _ml_extension_destroy_tensors_info (void *data)
     ml_tensors_info_destroy (info);
 }
 
+/**
+ * @brief Internal function to parse common option from json.
+ */
+static void
+_ml_extension_conf_parse_common (ml_service_s * mls, JsonObject * object)
+{
+  const gchar *value = NULL;
+
+  g_return_if_fail (object != NULL);
+
+  if (json_object_has_member (object, "input_queue_size")) {
+    value = json_object_get_string_member (object, "input_queue_size");
+
+    if (STR_IS_VALID (value))
+      _ml_service_extension_set_information (mls, "input_queue_size", value);
+  }
+
+  if (json_object_has_member (object, "max_input")) {
+    value = json_object_get_string_member (object, "max_input");
+
+    if (STR_IS_VALID (value))
+      _ml_service_extension_set_information (mls, "max_input", value);
+  }
+
+  if (json_object_has_member (object, "timeout")) {
+    value = json_object_get_string_member (object, "timeout");
+
+    if (STR_IS_VALID (value))
+      _ml_service_extension_set_information (mls, "timeout", value);
+  }
+}
+
 /**
  * @brief Internal function to parse single-shot info from json.
  */
@@ -553,20 +585,21 @@ static int
 _ml_extension_conf_parse_json (ml_service_s * mls, JsonObject * object)
 {
   ml_extension_s *ext = (ml_extension_s *) mls->priv;
+  JsonObject *sub = NULL;
   int status;
 
   if (json_object_has_member (object, "single")) {
-    JsonObject *single = json_object_get_object_member (object, "single");
+    sub = json_object_get_object_member (object, "single");
 
-    status = _ml_extension_conf_parse_single (mls, single);
+    status = _ml_extension_conf_parse_single (mls, sub);
     if (status != ML_ERROR_NONE)
       return status;
 
     ext->type = ML_EXTENSION_TYPE_SINGLE;
   } else if (json_object_has_member (object, "pipeline")) {
-    JsonObject *pipe = json_object_get_object_member (object, "pipeline");
+    sub = json_object_get_object_member (object, "pipeline");
 
-    status = _ml_extension_conf_parse_pipeline (mls, pipe);
+    status = _ml_extension_conf_parse_pipeline (mls, sub);
     if (status != ML_ERROR_NONE)
       return status;
 
@@ -576,6 +609,7 @@ _ml_extension_conf_parse_json (ml_service_s * mls, JsonObject * object)
         "Failed to parse configuration file, cannot get the valid type from configuration.");
   }
 
+  _ml_extension_conf_parse_common (mls, sub);
   return ML_ERROR_NONE;
 }
 
@@ -804,7 +838,10 @@ _ml_service_extension_set_information (ml_service_s * mls, const char *name,
 {
   ml_extension_s *ext = (ml_extension_s *) mls->priv;
 
-  /* Check limitation of message queue and other options. */
+  /**
+   * Check limitation of message queue and other options.
+   * When adding new value, you should fix _ml_extension_conf_parse_common() also.
+   */
   if (g_ascii_strcasecmp (name, "input_queue_size") == 0 ||
       g_ascii_strcasecmp (name, "max_input") == 0) {
     ext->max_input = (guint) g_ascii_strtoull (value, NULL, 10);
diff --git a/c/src/ml-api-service-private.h b/c/src/ml-api-service-private.h
index d61c3417..90cee4b0 100644
--- a/c/src/ml-api-service-private.h
+++ b/c/src/ml-api-service-private.h
@@ -29,10 +29,11 @@ extern "C" {
  * @brief Macro for the event types of machine learning service.
  * @todo TBU, need ACR later (update enum for ml-service event, see ml_service_event_cb)
  */
-#define ML_SERVICE_EVENT_MODEL_REGISTERED 2
-#define ML_SERVICE_EVENT_PIPELINE_REGISTERED 3
-#define ML_SERVICE_EVENT_REPLY 4
-#define ML_SERVICE_EVENT_LAUNCH 5
+#define ML_SERVICE_EVENT_CUSTOM (0x7f000000)
+#define ML_SERVICE_EVENT_MODEL_REGISTERED (ML_SERVICE_EVENT_CUSTOM + 1)
+#define ML_SERVICE_EVENT_PIPELINE_REGISTERED (ML_SERVICE_EVENT_CUSTOM + 2)
+#define ML_SERVICE_EVENT_REPLY (ML_SERVICE_EVENT_CUSTOM + 3)
+#define ML_SERVICE_EVENT_LAUNCH (ML_SERVICE_EVENT_CUSTOM + 4)
 
 /**
  * @brief Enumeration for ml-service type.
diff --git a/c/src/ml-api-service.c b/c/src/ml-api-service.c
index c3e281ba..907ec230 100644
--- a/c/src/ml-api-service.c
+++ b/c/src/ml-api-service.c
@@ -237,6 +237,12 @@ _ml_service_conf_parse_tensors_info (JsonNode * info_node,
   if (JSON_NODE_HOLDS_ARRAY (info_node)) {
     array = json_node_get_array (info_node);
     info.num_tensors = json_array_get_length (array);
+
+    if (info.num_tensors > NNS_TENSOR_SIZE_LIMIT) {
+      _ml_error_report_return (ML_ERROR_INVALID_PARAMETER,
+          "The array length of json for tensor information (%u) exceeds the max limit.",
+          info.num_tensors);
+    }
   }
 
   for (i = 0; i < info.num_tensors; i++) {
diff --git a/tests/capi/unittest_capi_service_extension.cc b/tests/capi/unittest_capi_service_extension.cc
index f3322ac3..9fdc10ad 100644
--- a/tests/capi/unittest_capi_service_extension.cc
+++ b/tests/capi/unittest_capi_service_extension.cc
@@ -391,19 +391,22 @@ _extension_test_imgclf (ml_service_h handle, gboolean is_pipeline)
 }
 
 #if defined(ENABLE_LLAMACPP)
+#define LLAMACPP_TEST_MODEL "TinyStories-656K-Q2_K.gguf"
+#define LLAMACPP_TEST_MODEL_URL \
+  "https://huggingface.co/tensorblock/TinyStories-656K-GGUF"
+
 /**
  * @brief Macro to skip testcase if model file is not ready.
  */
-#define skip_llamacpp_tc(tc_name)                                                                  \
-  do {                                                                                             \
-    g_autofree gchar *model_file = _get_model_path ("llama-2-7b-chat.Q2_K.gguf");                  \
-    if (!g_file_test (model_file, G_FILE_TEST_EXISTS)) {                                           \
-      g_autofree gchar *msg = g_strdup_printf (                                                    \
-          "Skipping '%s' due to missing model file. "                                              \
-          "Please download model file from https://huggingface.co/TheBloke/Llama-2-7B-Chat-GGUF.", \
-          tc_name);                                                                                \
-      GTEST_SKIP () << msg;                                                                        \
-    }                                                                                              \
+#define skip_llamacpp_tc(tc_name)                                                                \
+  do {                                                                                           \
+    g_autofree gchar *model_file = _get_model_path (LLAMACPP_TEST_MODEL);                        \
+    if (!g_file_test (model_file, G_FILE_TEST_EXISTS)) {                                         \
+      g_autofree gchar *msg = g_strdup_printf (                                                  \
+          "Skipping '%s' due to missing model file '%s'. Please download model file from '%s'.", \
+          tc_name, LLAMACPP_TEST_MODEL, LLAMACPP_TEST_MODEL_URL);                                \
+      GTEST_SKIP () << msg;                                                                      \
+    }                                                                                            \
   } while (0)
 
 /**
diff --git a/tests/capi/unittest_capi_service_offloading.cc b/tests/capi/unittest_capi_service_offloading.cc
index 4e6fcb22..ac6ee9ba 100644
--- a/tests/capi/unittest_capi_service_offloading.cc
+++ b/tests/capi/unittest_capi_service_offloading.cc
@@ -300,7 +300,7 @@ TEST_F (MLOffloadingService, registerInvalidParam02_n)
   int status;
 
   g_autofree gchar *data = g_strdup ("fakesrc ! fakesink");
-  gsize len = strlen (data);
+  gsize len = strlen (data) + 1;
 
   status = _ml_service_offloading_request_raw (NULL, "req_raw", data, len);
   EXPECT_EQ (ML_ERROR_INVALID_PARAMETER, status);
diff --git a/tests/test_models/config/config_single_llamacpp.conf b/tests/test_models/config/config_single_llamacpp.conf
index c841c3fa..4b1d937c 100644
--- a/tests/test_models/config/config_single_llamacpp.conf
+++ b/tests/test_models/config/config_single_llamacpp.conf
@@ -2,7 +2,7 @@
     "single" :
     {
         "framework" : "llamacpp",
-        "model" : ["../tests/test_models/models/llama-2-7b-chat.Q2_K.gguf"],
+        "model" : ["../tests/test_models/models/TinyStories-656K-Q2_K.gguf"],
         "custom" : "num_predict:32",
         "invoke_dynamic" : "true",
         "invoke_async" : "false"
diff --git a/tests/test_models/config/config_single_llamacpp_async.conf b/tests/test_models/config/config_single_llamacpp_async.conf
index fa5672e8..881d85ad 100644
--- a/tests/test_models/config/config_single_llamacpp_async.conf
+++ b/tests/test_models/config/config_single_llamacpp_async.conf
@@ -2,7 +2,7 @@
     "single" :
     {
         "framework" : "llamacpp",
-        "model" : ["../tests/test_models/models/llama-2-7b-chat.Q2_K.gguf"],
+        "model" : ["../tests/test_models/models/TinyStories-656K-Q2_K.gguf"],
         "custom" : "num_predict:32",
         "invoke_dynamic" : "true",
         "invoke_async" : "true"