diff --git a/source/dnode/vnode/src/tsdb/tsdbMemTable.c b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
index d34af9acae68b964879cd7ba24491f0ff878e439..d8253e25f75a10cdbd00f9449f66230ed9560b85 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMemTable.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
@@ -16,7 +16,7 @@
 #include "tsdb.h"
 
 #define MEM_MIN_HASH 1024
-#define SL_MAX_LEVEL 5
+#define SL_MAX_LEVEL 1
 
 // sizeof(SMemSkipListNode) + sizeof(SMemSkipListNode *) * (l) * 2
 #define SL_NODE_SIZE(l)               (sizeof(SMemSkipListNode) + ((l) << 4))