diff --git a/sdk/examples/simple/src/ClientTest.cpp b/sdk/examples/simple/src/ClientTest.cpp
index 06161166aa7279dcbdbe536e93c49b13d7e36c65..fb2e2b138d9f0a41cfd4e9f0f446be2bc1f6807e 100644
--- a/sdk/examples/simple/src/ClientTest.cpp
+++ b/sdk/examples/simple/src/ClientTest.cpp
@@ -31,7 +31,7 @@ constexpr int64_t NQ = 5;
 constexpr int64_t TOP_K = 10;
 constexpr int64_t NPROBE = 32;
 constexpr int64_t SEARCH_TARGET = 5000;  // change this value, result is different
-constexpr int64_t ADD_ENTITY_LOOP = 50;
+constexpr int64_t ADD_ENTITY_LOOP = 5;
 constexpr milvus::IndexType INDEX_TYPE = milvus::IndexType::IVFSQ8;
 constexpr int32_t NLIST = 16384;
 
@@ -245,19 +245,15 @@ ClientTest::Test() {
     Flush(collection_name);
     ShowCollectionInfo(collection_name);
 
-//    GetEntityById(collection_name, search_id_array_[0]);
-//    SearchEntities(collection_name, TOP_K, NPROBE);
-//
-//    CreateIndex(collection_name, INDEX_TYPE, NLIST);
-//    ShowCollectionInfo(collection_name);
-//
-//    PreloadCollection(collection_name);
+    GetEntityById(collection_name, search_id_array_[0]);
+    SearchEntities(collection_name, TOP_K, NPROBE);
 
-    constexpr long vector_size = 2000000;
-    std::vector<int64_t> delete_ids(vector_size); //  = {search_id_array_[0], search_id_array_[1]};
-    for(long i= 0; i < vector_size;  ++ i) {
-        delete_ids[i] = i;
-    }
+    CreateIndex(collection_name, INDEX_TYPE, NLIST);
+    ShowCollectionInfo(collection_name);
+
+    PreloadCollection(collection_name);
+
+    std::vector<int64_t> delete_ids = {search_id_array_[0], search_id_array_[1]};
     DeleteByIds(collection_name, delete_ids);
     SearchEntities(collection_name, TOP_K, NPROBE); // this line get two search error since we delete two entities