I think the explanation that might be missing here is that every user that hits "Run" gets his or her own linux container in which they will be working.
The process of provisioning a new container (especially under high load that we're seeing today) is what takes a few moments. We however do a fair amount of pre-allocation and other tricks to speed this process up.
The process of provisioning a new container (especially under high load that we're seeing today) is what takes a few moments. We however do a fair amount of pre-allocation and other tricks to speed this process up.