diff --git a/configs/advanced/query_node.yaml b/configs/advanced/query_node.yaml
index 1f9a773132..e4e6a1ffd4 100644
--- a/configs/advanced/query_node.yaml
+++ b/configs/advanced/query_node.yaml
@@ -27,5 +27,5 @@ queryNode:
       recvBufSize: 64
 
   segcore:
-    chunkSize: 32768  # 32M
+    chunkRows: 32768
     simdType: auto    # auto, avx512, avx2, sse
diff --git a/internal/core/bench/bench_search.cpp b/internal/core/bench/bench_search.cpp
index d4ad0b53e3..1ff8302461 100644
--- a/internal/core/bench/bench_search.cpp
+++ b/internal/core/bench/bench_search.cpp
@@ -68,9 +68,9 @@ Search_SmallIndex(benchmark::State& state) {
     }();
 
     auto is_small_index = state.range(0);
-    auto chunk_size = state.range(1) * 1024;
+    auto chunk_rows = state.range(1) * 1024;
     auto segconf = SegcoreConfig::default_config();
-    segconf.set_size_per_chunk(chunk_size);
+    segconf.set_chunk_rows(chunk_rows);
     auto segment = CreateGrowingSegment(schema, segconf);
     if (!is_small_index) {
         segment->disable_small_index();
diff --git a/internal/core/src/segcore/FieldIndexing.h b/internal/core/src/segcore/FieldIndexing.h
index bb7f41c51e..6b99d9ff78 100644
--- a/internal/core/src/segcore/FieldIndexing.h
+++ b/internal/core/src/segcore/FieldIndexing.h
@@ -45,7 +45,7 @@ class FieldIndexing {
 
     int64_t
     get_size_per_chunk() const {
-        return segcore_config_.get_size_per_chunk();
+        return segcore_config_.get_chunk_rows();
     }
 
     virtual knowhere::Index*
diff --git a/internal/core/src/segcore/SegcoreConfig.cpp b/internal/core/src/segcore/SegcoreConfig.cpp
index 68b9da6e8b..ed8be1b75a 100644
--- a/internal/core/src/segcore/SegcoreConfig.cpp
+++ b/internal/core/src/segcore/SegcoreConfig.cpp
@@ -48,8 +48,8 @@ SegcoreConfig::parse_from(const std::string& config_path) {
         YAML::Node top_config = YAML::LoadFile(config_path);
         Assert(top_config.IsMap());
         auto seg_config = subnode(top_config, "segcore");
-        auto chunk_size = subnode(seg_config, "chunk_size").as<int64_t>();
-        this->size_per_chunk_ = chunk_size;
+        auto chunk_rows = subnode(seg_config, "chunk_rows").as<int64_t>();
+        this->chunk_rows_ = chunk_rows;
 
 #if 0
         auto index_list = subnode(seg_config, "small_index");
diff --git a/internal/core/src/segcore/SegcoreConfig.h b/internal/core/src/segcore/SegcoreConfig.h
index 6ada01a01e..42701bc11d 100644
--- a/internal/core/src/segcore/SegcoreConfig.h
+++ b/internal/core/src/segcore/SegcoreConfig.h
@@ -55,13 +55,13 @@ class SegcoreConfig {
     }
 
     int64_t
-    get_size_per_chunk() const {
-        return size_per_chunk_;
+    get_chunk_rows() const {
+        return chunk_rows_;
     }
 
     void
-    set_size_per_chunk(int64_t size_per_chunk) {
-        size_per_chunk_ = size_per_chunk;
+    set_chunk_rows(int64_t chunk_rows) {
+        chunk_rows_ = chunk_rows;
     }
 
     void
@@ -70,7 +70,7 @@ class SegcoreConfig {
     }
 
  private:
-    int64_t size_per_chunk_ = 32 * 1024;
+    int64_t chunk_rows_ = 32 * 1024;
     std::map<MetricType, SmallIndexConf> table_;
 };
 
diff --git a/internal/core/src/segcore/SegmentGrowingImpl.cpp b/internal/core/src/segcore/SegmentGrowingImpl.cpp
index f4de039617..80aa3ede1d 100644
--- a/internal/core/src/segcore/SegmentGrowingImpl.cpp
+++ b/internal/core/src/segcore/SegmentGrowingImpl.cpp
@@ -203,8 +203,8 @@ SegmentGrowingImpl::do_insert(int64_t reserved_begin,
 
     record_.ack_responder_.AddSegment(reserved_begin, reserved_begin + size);
     if (enable_small_index_) {
-        int64_t chunk_size = segcore_config_.get_size_per_chunk();
-        indexing_record_.UpdateResourceAck(record_.ack_responder_.GetAck() / chunk_size, record_);
+        int64_t chunk_rows = segcore_config_.get_chunk_rows();
+        indexing_record_.UpdateResourceAck(record_.ack_responder_.GetAck() / chunk_rows, record_);
     }
 }
 
@@ -243,10 +243,10 @@ SegmentGrowingImpl::Delete(int64_t reserved_begin,
 int64_t
 SegmentGrowingImpl::GetMemoryUsageInBytes() const {
     int64_t total_bytes = 0;
-    auto size_per_chunk = segcore_config_.get_size_per_chunk();
-    int64_t ins_n = upper_align(record_.reserved, size_per_chunk);
+    auto chunk_rows = segcore_config_.get_chunk_rows();
+    int64_t ins_n = upper_align(record_.reserved, chunk_rows);
     total_bytes += ins_n * (schema_->get_total_sizeof() + 16 + 1);
-    int64_t del_n = upper_align(deleted_record_.reserved, size_per_chunk);
+    int64_t del_n = upper_align(deleted_record_.reserved, chunk_rows);
     total_bytes += del_n * (16 * 2);
     return total_bytes;
 }
@@ -260,7 +260,7 @@ SegmentGrowingImpl::chunk_data_impl(FieldOffset field_offset, int64_t chunk_id)
 int64_t
 SegmentGrowingImpl::num_chunk() const {
     auto size = get_insert_record().ack_responder_.GetAck();
-    return upper_div(size, segcore_config_.get_size_per_chunk());
+    return upper_div(size, segcore_config_.get_chunk_rows());
 }
 
 void
diff --git a/internal/core/src/segcore/SegmentGrowingImpl.h b/internal/core/src/segcore/SegmentGrowingImpl.h
index c2baf26b87..235865e780 100644
--- a/internal/core/src/segcore/SegmentGrowingImpl.h
+++ b/internal/core/src/segcore/SegmentGrowingImpl.h
@@ -109,7 +109,7 @@ class SegmentGrowingImpl : public SegmentGrowing {
 
     int64_t
     size_per_chunk() const final {
-        return segcore_config_.get_size_per_chunk();
+        return segcore_config_.get_chunk_rows();
     }
 
  public:
@@ -159,7 +159,7 @@ class SegmentGrowingImpl : public SegmentGrowing {
     explicit SegmentGrowingImpl(SchemaPtr schema, const SegcoreConfig& segcore_config)
         : segcore_config_(segcore_config),
           schema_(std::move(schema)),
-          record_(*schema_, segcore_config.get_size_per_chunk()),
+          record_(*schema_, segcore_config.get_chunk_rows()),
           indexing_record_(*schema_, segcore_config_) {
     }
 
diff --git a/internal/core/src/segcore/segcore_init_c.cpp b/internal/core/src/segcore/segcore_init_c.cpp
index af36fcb3df..79d2d9b620 100644
--- a/internal/core/src/segcore/segcore_init_c.cpp
+++ b/internal/core/src/segcore/segcore_init_c.cpp
@@ -37,10 +37,10 @@ SegcoreInit() {
 }
 
 extern "C" void
-SegcoreSetChunkSize(const int64_t value) {
+SegcoreSetChunkRows(const int64_t value) {
     milvus::segcore::SegcoreConfig& config = milvus::segcore::SegcoreConfig::default_config();
-    config.set_size_per_chunk(value);
-    std::cout << "set config chunk_size: " << config.get_size_per_chunk() << std::endl;
+    config.set_chunk_rows(value);
+    std::cout << "set config chunk_size: " << config.get_chunk_rows() << std::endl;
 }
 
 extern "C" void
diff --git a/internal/core/src/segcore/segcore_init_c.h b/internal/core/src/segcore/segcore_init_c.h
index 985faefa8f..2678f4ab72 100644
--- a/internal/core/src/segcore/segcore_init_c.h
+++ b/internal/core/src/segcore/segcore_init_c.h
@@ -19,7 +19,7 @@ void
 SegcoreInit();
 
 void
-SegcoreSetChunkSize(const int64_t);
+SegcoreSetChunkRows(const int64_t);
 
 void
 SegcoreSetSimdType(const char*);
diff --git a/internal/core/unittest/test_init.cpp b/internal/core/unittest/test_init.cpp
index e93cce6995..4bbc43df6e 100644
--- a/internal/core/unittest/test_init.cpp
+++ b/internal/core/unittest/test_init.cpp
@@ -20,6 +20,6 @@ TEST(Init, Naive) {
     using namespace milvus;
     using namespace milvus::segcore;
     SegcoreInit();
-    SegcoreSetChunkSize(32768);
+    SegcoreSetChunkRows(32768);
     SegcoreSetSimdType("auto");
 }
diff --git a/internal/core/unittest/test_utils/test_segcore.yaml b/internal/core/unittest/test_utils/test_segcore.yaml
index cdad64f22d..a0c5dfa611 100644
--- a/internal/core/unittest/test_utils/test_segcore.yaml
+++ b/internal/core/unittest/test_utils/test_segcore.yaml
@@ -1,5 +1,5 @@
 segcore:
-  chunk_size: 32768
+  chunk_rows: 32768
   small_index:
     - metric_type: ["L2", "IP"]
       index_type: "IVF"
diff --git a/internal/querynode/param_table.go b/internal/querynode/param_table.go
index 6a444aa202..7510709696 100644
--- a/internal/querynode/param_table.go
+++ b/internal/querynode/param_table.go
@@ -69,7 +69,7 @@ type ParamTable struct {
 	SliceIndex        int
 
 	// segcore
-	ChunkSize int64
+	ChunkRows int64
 	SimdType  string
 
 	Log log.Config
@@ -115,7 +115,7 @@ func (p *ParamTable) Init() {
 		p.initStatsPublishInterval()
 		p.initStatsChannelName()
 
-		p.initSegcoreChunkSize()
+		p.initSegcoreChunkRows()
 		p.initSegcoreSimdType()
 
 		p.initLogCfg()
@@ -261,8 +261,8 @@ func (p *ParamTable) initStatsChannelName() {
 	p.StatsChannelName = channels
 }
 
-func (p *ParamTable) initSegcoreChunkSize() {
-	p.ChunkSize = p.ParseInt64("queryNode.segcore.chunkSize")
+func (p *ParamTable) initSegcoreChunkRows() {
+	p.ChunkRows = p.ParseInt64("queryNode.segcore.chunkRows")
 }
 
 func (p *ParamTable) initSegcoreSimdType() {
diff --git a/internal/querynode/query_node.go b/internal/querynode/query_node.go
index 02cc25ffd9..b1988b8bc9 100644
--- a/internal/querynode/query_node.go
+++ b/internal/querynode/query_node.go
@@ -103,8 +103,8 @@ func (node *QueryNode) InitSegcore() {
 	C.SegcoreInit()
 
 	// override segcore chunk size
-	cChunkSize := C.int64_t(Params.ChunkSize)
-	C.SegcoreSetChunkSize(cChunkSize)
+	cChunkRows := C.int64_t(Params.ChunkRows)
+	C.SegcoreSetChunkRows(cChunkRows)
 
 	// override segcore SIMD type
 	cSimdType := C.CString(Params.SimdType)