Thank you, for your answer.
aws_autoscaler.py works as follows (based on my experiments):

• let’s assume that the instance and the worker is started
• there are no tasks running on the worker for max_idle_time_min
• autoscaler terminates the instance
• worker stops sending updates to app.clear.ml
• worker is still shown on the ui with message “Update Time a few minutes ago”
• autoscaler thinks that this worker is still idle because it’s returned via workers.get_all
• when I enqueue task in this state autoscaler doesn’t start new instance untill 600secs interval finishes

Does app.clear.ml autoscaler works the same way ?
Is it possible to see app.clear.ml autoscaler sources ?