Merge pull request #871 from mike-lerch/cpu-100-empty-queue

Prevent 100% cpu usage while SQS long polling on an empty queue
getmoto · Mar 17, 2017 · 042524f · 042524f
2 parents a5da348 + 83084bf
commit 042524f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/moto/sqs/models.py b/moto/sqs/models.py
@@ -289,6 +289,11 @@ def receive_messages(self, queue_name, count, wait_seconds_timeout, visibility_t
 
         # queue.messages only contains visible messages
         while True:
+            if len(queue.messages) == 0:
+                import time
+                time.sleep(0.001)
+                continue
+
             for message in queue.messages:
                 if not message.visible:
                     continue