diff --git a/internal/core/unittest/test_exec.cpp b/internal/core/unittest/test_exec.cpp
index 026134bd1b..ceae28e5d1 100644
--- a/internal/core/unittest/test_exec.cpp
+++ b/internal/core/unittest/test_exec.cpp
@@ -84,7 +84,7 @@ class TaskTest : public testing::TestWithParam<DataType> {
         schema->set_primary_field_id(str1_fid);
 
         auto segment = CreateSealedSegment(schema);
-        size_t N = 1000000;
+        size_t N = 10000;
         num_rows_ = N;
         auto raw_data = DataGen(schema, N);
         auto fields = schema->get_fields();
@@ -131,7 +131,7 @@ TEST_P(TaskTest, UnaryExpr) {
     auto query_context = std::make_shared<milvus::exec::QueryContext>(
         "test1",
         segment_.get(),
-        1000000,
+        num_rows_,
         MAX_TIMESTAMP,
         std::make_shared<milvus::exec::QueryConfig>(
             std::unordered_map<std::string, std::string>{}));
@@ -175,7 +175,7 @@ TEST_P(TaskTest, LogicalExpr) {
     auto query_context = std::make_shared<milvus::exec::QueryContext>(
         "test1",
         segment_.get(),
-        1000000,
+        num_rows_,
         MAX_TIMESTAMP,
         std::make_shared<milvus::exec::QueryConfig>(
             std::unordered_map<std::string, std::string>{}));
@@ -232,7 +232,7 @@ TEST_P(TaskTest, CompileInputs_and) {
     auto expr7 = std::make_shared<expr::LogicalBinaryExpr>(
         expr::LogicalBinaryExpr::OpType::And, expr3, expr6);
     auto query_context = std::make_shared<milvus::exec::QueryContext>(
-        DEAFULT_QUERY_ID, segment_.get(), 1000000, MAX_TIMESTAMP);
+        DEAFULT_QUERY_ID, segment_.get(), num_rows_, MAX_TIMESTAMP);
     auto exprs = milvus::exec::CompileInputs(expr7, query_context.get(), {});
     EXPECT_EQ(exprs.size(), 4);
     for (int i = 0; i < exprs.size(); ++i) {
@@ -274,7 +274,7 @@ TEST_P(TaskTest, CompileInputs_or_with_and) {
         auto expr6 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::And, expr1, expr2);
         auto query_context = std::make_shared<milvus::exec::QueryContext>(
-            DEAFULT_QUERY_ID, segment_.get(), 1000000, MAX_TIMESTAMP);
+            DEAFULT_QUERY_ID, segment_.get(), num_rows_, MAX_TIMESTAMP);
         auto expr7 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::Or, expr3, expr6);
         auto exprs =
@@ -308,7 +308,7 @@ TEST_P(TaskTest, CompileInputs_or_with_and) {
         auto expr6 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::And, expr1, expr2);
         auto query_context = std::make_shared<milvus::exec::QueryContext>(
-            DEAFULT_QUERY_ID, segment_.get(), 1000000, MAX_TIMESTAMP);
+            DEAFULT_QUERY_ID, segment_.get(), num_rows_, MAX_TIMESTAMP);
         auto expr7 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::Or, expr3, expr6);
         auto exprs =
@@ -345,7 +345,7 @@ TEST_P(TaskTest, CompileInputs_or_with_and) {
         auto expr6 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::And, expr1, expr2);
         auto query_context = std::make_shared<milvus::exec::QueryContext>(
-            DEAFULT_QUERY_ID, segment_.get(), 1000000, MAX_TIMESTAMP);
+            DEAFULT_QUERY_ID, segment_.get(), num_rows_, MAX_TIMESTAMP);
         auto expr7 = std::make_shared<expr::LogicalBinaryExpr>(
             expr::LogicalBinaryExpr::OpType::And, expr3, expr6);
         auto exprs =
diff --git a/internal/core/unittest/test_expr.cpp b/internal/core/unittest/test_expr.cpp
index efeae58f78..33b231ca83 100644
--- a/internal/core/unittest/test_expr.cpp
+++ b/internal/core/unittest/test_expr.cpp
@@ -1271,7 +1271,7 @@ TEST(Expr, TestExprPerformance) {
                                         {DataType::DOUBLE, double_fid}};
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -1678,7 +1678,7 @@ TEST_P(ExprTest, TestSealedSegmentGetBatchSize) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 40000;
     auto raw_data = DataGen(schema, N);
     // load field data
     auto fields = schema->get_fields();
@@ -1739,7 +1739,7 @@ TEST_P(ExprTest, TestGrowingSegmentGetBatchSize) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateGrowingSegment(schema, empty_index_meta);
-    int N = 1000000;
+    int N = 400000;
     auto raw_data = DataGen(schema, N);
     seg->PreInsert(N);
     seg->Insert(0,
@@ -1804,7 +1804,7 @@ TEST_P(ExprTest, TestConjuctExpr) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
     // load field data
     auto fields = schema->get_fields();
@@ -1871,7 +1871,7 @@ TEST_P(ExprTest, TestUnaryBenchTest) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -1942,7 +1942,7 @@ TEST_P(ExprTest, TestBinaryRangeBenchTest) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -2022,7 +2022,7 @@ TEST_P(ExprTest, TestLogicalUnaryBenchTest) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -2096,7 +2096,7 @@ TEST_P(ExprTest, TestBinaryLogicalBenchTest) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -2180,7 +2180,7 @@ TEST_P(ExprTest, TestBinaryArithOpEvalRangeBenchExpr) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -2263,7 +2263,7 @@ TEST_P(ExprTest, TestCompareExprBenchTest) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
@@ -2333,7 +2333,7 @@ TEST_P(ExprTest, TestRefactorExprs) {
     schema->set_primary_field_id(str1_fid);
 
     auto seg = CreateSealedSegment(schema);
-    int N = 1000000;
+    int N = 10000;
     auto raw_data = DataGen(schema, N);
 
     // load field data
diff --git a/internal/core/unittest/test_growing_index.cpp b/internal/core/unittest/test_growing_index.cpp
index 7d619182b6..880f329bf7 100644
--- a/internal/core/unittest/test_growing_index.cpp
+++ b/internal/core/unittest/test_growing_index.cpp
@@ -136,7 +136,7 @@ TEST_P(GrowingIndexTest, Correctness) {
     auto range_plan_str = range_query_plan_node.SerializeAsString();
 
     int64_t per_batch = 10000;
-    int64_t n_batch = 20;
+    int64_t n_batch = 3;
     int64_t top_k = 5;
     for (int64_t i = 0; i < n_batch; i++) {
         auto dataset = DataGen(schema, per_batch);
@@ -247,8 +247,8 @@ TEST_P(GrowingIndexTest, GetVector) {
 
     if (data_type == DataType::VECTOR_FLOAT) {
         // GetVector for VECTOR_FLOAT
-        int64_t per_batch = 5000;
-        int64_t n_batch = 20;
+        int64_t per_batch = 10000;
+        int64_t n_batch = 3;
         int64_t dim = 128;
         for (int64_t i = 0; i < n_batch; i++) {
             auto dataset = DataGen(schema, per_batch);
@@ -277,8 +277,8 @@ TEST_P(GrowingIndexTest, GetVector) {
         }
     } else if (is_sparse) {
         // GetVector for VECTOR_SPARSE_FLOAT
-        int64_t per_batch = 5000;
-        int64_t n_batch = 20;
+        int64_t per_batch = 10000;
+        int64_t n_batch = 3;
         int64_t dim = 128;
         for (int64_t i = 0; i < n_batch; i++) {
             auto dataset = DataGen(schema, per_batch);
diff --git a/internal/core/unittest/test_indexing.cpp b/internal/core/unittest/test_indexing.cpp
index 9862d83993..75e425e7b3 100644
--- a/internal/core/unittest/test_indexing.cpp
+++ b/internal/core/unittest/test_indexing.cpp
@@ -233,7 +233,7 @@ TEST(Indexing, BinaryBruteForce) {
 }
 
 TEST(Indexing, Naive) {
-    constexpr int N = 10000;
+    constexpr int N = 1000;
     constexpr int TOPK = 10;
 
     auto [raw_data, timestamps, uids] = generate_data<DIM>(N);
@@ -410,7 +410,7 @@ INSTANTIATE_TEST_SUITE_P(
         std::pair(knowhere::IndexEnum::INDEX_HNSW, knowhere::metric::L2)));
 
 TEST(Indexing, Iterator) {
-    constexpr int N = 10240;
+    constexpr int N = 1024;
     constexpr int TOPK = 100;
     constexpr int dim = 128;
 
@@ -754,7 +754,7 @@ TEST(Indexing, SearchDiskAnnWithInvalidParam) {
 }
 
 TEST(Indexing, SearchDiskAnnWithFloat16) {
-    int64_t NB = 1000;
+    int64_t NB = 100;
     int64_t NQ = 2;
     int64_t K = 4;
     IndexType index_type = knowhere::IndexEnum::INDEX_DISKANN;