throttle don't sleep with 0 seconds

raiden-network · Sep 4, 2017 · 1d99856 · 1d99856
1 parent ef6b10e
commit 1d99856
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/raiden/network/transport.py b/raiden/network/transport.py
@@ -95,7 +95,13 @@ def send(self, sender, host_port, bytes_):
             host_port (Tuple[(str, int)]): Tuple with the host name and port number.
             bytes_ (bytes): The bytes that are going to be sent through the wire.
         """
-        gevent.sleep(self.throttle_policy.consume(1))
+        sleep_timeout = self.throttle_policy.consume(1)
+
+        # Don't sleep if timeout is zero, otherwise a context-switch is done
+        # and the message is delayed, increasing it's latency
+        if sleep_timeout:
+            gevent.sleep(sleep_timeout)
+
         self.server.sendto(bytes_, host_port)
 
         # enable debugging using the DummyNetwork callbacks