potiuk commented on issue #14656:
URL: https://github.com/apache/airflow/issues/14656#issuecomment-808765654


   Before I go the "small instance" route, I am going to experiment now with 
the bigger instances. I think even now they will give us significant boost and 
cheaper prices (because they will be needed for shorter time). We got some 30 
USD/day with parallel tests (which is ~ 800 USD/month give or take including 
lower traffic during weekends) which is still quite a bit too high.
   
   I set the autoscaling like this now:
   
   * rx52xlarge instances
   * Max 20 instances (lowered from 30)
   * Desired: 3 instances (lowered from 5)
   
   The tests will run ~2 times faster now and I hope it will bring the cost 
down (I am also working on few more optimizations).
   
   ```


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