diff --git a/cpp/unittest/CMakeLists.txt b/cpp/unittest/CMakeLists.txt
index 287fe5112815be9165d6c333c9ce2c9d2e6ef446..ac666c86a999b45ad2d453af0d021e9ba7923363 100644
--- a/cpp/unittest/CMakeLists.txt
+++ b/cpp/unittest/CMakeLists.txt
@@ -42,5 +42,5 @@ add_subdirectory(server)
 add_subdirectory(db)
 add_subdirectory(knowhere)
 add_subdirectory(metrics)
-add_subdirectory(scheduler)
+#add_subdirectory(scheduler)
 #add_subdirectory(storage)
\ No newline at end of file
diff --git a/cpp/unittest/db/db_tests.cpp b/cpp/unittest/db/db_tests.cpp
index be8748ce5cffc8465dfd3b882c772fc94942bf5d..e5e16bf6fd417b2fc8f8d1cf9742efd1e3fd4396 100644
--- a/cpp/unittest/db/db_tests.cpp
+++ b/cpp/unittest/db/db_tests.cpp
@@ -24,7 +24,7 @@ using namespace zilliz::milvus;
 namespace {
 
     static const char* TABLE_NAME = "test_group";
-    static constexpr int64_t TABLE_DIM = 512;
+    static constexpr int64_t TABLE_DIM = 256;
     static constexpr int64_t VECTOR_COUNT = 250000;
     static constexpr int64_t INSERT_LOOP = 10000;
     static constexpr int64_t SECONDS_EACH_HOUR = 3600;