diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index ee1ede7535..8ca0045d41 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -288,7 +288,7 @@ common:
   # Valid values: [auto, avx512, avx2, avx, sse4_2]
   # This configuration is only used by querynode and indexnode, it selects CPU instruction set for Searching and Index-building.
   simdType: auto
-  indexSliceSize: 4 # MB
+  indexSliceSize: 16 # MB
 
   # please adjust in embedded Milvus: local
   storageType: minio