Thanks for the feedback.  We explained the reasoning behind 30 seconds vs &quot;longer&quot; in the InfoQ interview I mentioned in a different thread.<p>But basically if you&#x27;re getting preempted it&#x27;s often because some regular VM is trying to land on the box and needs to be kicked off.  Our goal here is to make sure we don&#x27;t impact even our 95th-percentile VM creation time for regular VMs.  We create and boot VMs so much faster (I think even p90 is 36s right now) that &quot;2 minutes&quot; is more than it sounds like.<p>Finally, one of the things we tracked carefully during Beta is how quickly people actually shut down.  Median on Linux was something like 5 seconds.  Even the 90th percentile was something like 10 or 15 seconds.  There might be people avoiding the product because they &quot;need&quot; more time, but honestly most of those use cases aren&#x27;t really prepared for preemption and should probably stick with a different solution.