diff --git a/scenarios/s3longevity.js b/scenarios/s3longevity.js
index 79c28cc..628ba8f 100644
--- a/scenarios/s3longevity.js
+++ b/scenarios/s3longevity.js
@@ -168,6 +168,9 @@ export function obj_write() {
 
     if (obj_registry) {
         obj_registry.addObject('', '', bucket, key, payload.hash());
+    } else {
+        log.withFields({bucket : obj.s3_bucket, key : obj.s3_key})
+            .info("write successfully");
     }
 }
 
@@ -196,6 +199,9 @@ export function obj_read() {
     const resp = s3_client.get(obj.bucket, obj.object);
     if (!resp.success) {
         log.withFields({bucket : obj.bucket, key : obj.object}).error(resp.error);
+    } else {
+        log.withFields({bucket : obj.s3_bucket, key : obj.s3_key})
+            .info("read successfully");
     }
 }