diff --git a/osgraph/api.cpp b/osgraph/api.cpp
index 8faceffac6..6bab3c69bc 100644
--- a/osgraph/api.cpp
+++ b/osgraph/api.cpp
@@ -380,6 +380,8 @@ std::string topn_developer(lgraph_api::GraphDB &db, const std::string& request)
 std::unordered_set<int64_t> get_repos_by_developer(lgraph_api::GraphDB &db, int64_t developer_vid) {
     auto txn = db.CreateReadTxn();
     auto vit = txn.GetVertexIterator(developer_vid);
+    auto deve_name = vit.GetField("name").AsString();
+    LOG_INFO() << FMA_FMT("get_repos_by_developer begin {}", deve_name);
     int16_t push_id = txn.GetEdgeLabelId("push");
 
     int16_t has_pr_id = txn.GetEdgeLabelId("has_pr");
@@ -482,6 +484,7 @@ std::unordered_set<int64_t> get_repos_by_developer(lgraph_api::GraphDB &db, int6
             }
         }
     }
+    LOG_INFO() << FMA_FMT("get_repos_by_developer end {}", deve_name);
     return repos;
 }