diff --git a/config/obs.example.toml b/config/obs.example.toml
index 4b107e15..0ba434ad 100644
--- a/config/obs.example.toml
+++ b/config/obs.example.toml
@@ -1,7 +1,7 @@
 [observability]
-endpoint = "" # Default is "http://localhost:4317" if not specified
-use_stdout = false
-sample_ratio = 0.5
+endpoint = "http://localhost:4317" # Default is "http://localhost:4317" if not specified
+use_stdout = false # Output with stdout, true output, false no output
+sample_ratio = 2.0
 meter_interval = 30
 service_name = "rustfs"
 service_version = "0.1.0"