Reduce spinning while waiting on queues

lib/ansible/plugins/strategy/__init__.py

@@ -311,7 +311,7 @@ class StrategyBase:
                 else:
                     raise AnsibleError("unknown result message received: %s" % result[0])
             except Queue.Empty:
-                pass
+                time.sleep(0.01)
 
         return ret_results
 

lib/ansible/plugins/strategy/linear.py

@@ -239,9 +239,6 @@ class StrategyModule(StrategyBase):
                         self._blocked_hosts[host.get_name()] = True
                         self._queue_task(host, task, task_vars, play_context)
 
-                    results = self._process_pending_results(iterator)
-                    host_results.extend(results)
-
                     # if we're bypassing the host loop, break out now
                     if run_once:
                         break