diff --git a/internal/core/src/segcore/DeletedRecord.h b/internal/core/src/segcore/DeletedRecord.h
index f54392fdbb..d50331fb42 100644
--- a/internal/core/src/segcore/DeletedRecord.h
+++ b/internal/core/src/segcore/DeletedRecord.h
@@ -46,7 +46,7 @@ struct Comparator {
 using SortedDeleteList =
     folly::ConcurrentSkipList<std::pair<Timestamp, Offset>, Comparator>;
 
-static int32_t DUMP_BATCH_SIZE = 100000;
+static int32_t DUMP_BATCH_SIZE = 10000;
 static int32_t DELETE_PAIR_SIZE = sizeof(std::pair<Timestamp, Offset>);
 
 template <bool is_sealed = false>
diff --git a/internal/core/unittest/test_delete_record.cpp b/internal/core/unittest/test_delete_record.cpp
index 0755e63b91..21a23e8930 100644
--- a/internal/core/unittest/test_delete_record.cpp
+++ b/internal/core/unittest/test_delete_record.cpp
@@ -263,7 +263,7 @@ TEST(DeleteMVCC, snapshot) {
         "fakevec", DataType::VECTOR_FLOAT, 16, knowhere::metric::L2);
     auto i64_fid = schema->AddDebugField("age", DataType::INT64);
     schema->set_primary_field_id(i64_fid);
-    auto N = 500000;
+    auto N = 50000;
     uint64_t seg_id = 101;
     InsertRecord insert_record(*schema, N);
     DeletedRecord<false> delete_record(&insert_record);
@@ -281,7 +281,7 @@ TEST(DeleteMVCC, snapshot) {
     field_data->set_data_raw(insert_offset, age_data.data(), N);
     insert_record.ack_responder_.AddSegment(insert_offset, insert_offset + N);
 
-    auto DN = 400000;
+    auto DN = 40000;
     std::vector<Timestamp> delete_ts(DN);
     std::vector<PkType> delete_pk(DN);
     for (int i = 0; i < DN; ++i) {
@@ -293,7 +293,7 @@ TEST(DeleteMVCC, snapshot) {
 
     auto snapshots = std::move(delete_record.get_snapshots());
     ASSERT_EQ(3, snapshots.size());
-    ASSERT_EQ(snapshots[2].second.count(), 300000);
+    ASSERT_EQ(snapshots[2].second.count(), 30000);
 }
 
 TEST(DeleteMVCC, insert_after_snapshot) {
@@ -306,7 +306,7 @@ TEST(DeleteMVCC, insert_after_snapshot) {
         "fakevec", DataType::VECTOR_FLOAT, 16, knowhere::metric::L2);
     auto i64_fid = schema->AddDebugField("age", DataType::INT64);
     schema->set_primary_field_id(i64_fid);
-    auto N = 110000;
+    auto N = 11000;
     uint64_t seg_id = 101;
     InsertRecord insert_record(*schema, N);
     DeletedRecord<false> delete_record(&insert_record);
@@ -326,7 +326,7 @@ TEST(DeleteMVCC, insert_after_snapshot) {
     insert_record.ack_responder_.AddSegment(insert_offset, insert_offset + N);
 
     // delete (0, 1), (1, 2) .... (DN, DN + 1)
-    auto DN = 101000;
+    auto DN = 10100;
     std::vector<Timestamp> delete_ts(DN);
     std::vector<PkType> delete_pk(DN);
     for (int i = 0; i < DN; ++i) {
@@ -338,7 +338,7 @@ TEST(DeleteMVCC, insert_after_snapshot) {
 
     auto snapshots = std::move(delete_record.get_snapshots());
     ASSERT_EQ(1, snapshots.size());
-    ASSERT_EQ(snapshots[0].second.count(), 100000);
+    ASSERT_EQ(snapshots[0].second.count(), 10000);
 
     // Query at N+1 ts
     {