diff --git a/opensearchpy/metrics.py b/opensearchpy/metrics.py
index 220cf891..4fecf063 100644
--- a/opensearchpy/metrics.py
+++ b/opensearchpy/metrics.py
@@ -16,9 +16,10 @@
 class TimeMetrics:
     def __init__(self) -> None:
         self.events = Events()
-        self.start_time = time.perf_counter()
-        self.end_time = time.perf_counter()
-        self.service_time = 0
+        current_time = time.perf_counter()
+        self.start_time = current_time
+        self.end_time = current_time
+        self.service_time = 0.0
 
         # Subscribe to the server_request_start and server_request_end events
         self.events.server_request_start += self.server_request_start