[okeuday]

CloudI and Erlang underneath are focused on soft real-time. For hard real-time (embedded) you need tighter integration with hardware. While it is true that people attempt to pursue (soft) real-time fault-tolerance on the JVM, the point in the CloudI article is that the pursuit does not achieve fault-tolerance which can be considered real-time, simply due to the JVM garbage collection which must interrupt real-time processing of an Actor model. This problem isn't often discussed, but is a simple way of showing the problems with fault-tolerance on the JVM. Without the JVM supporting fault-tolerance, the effort to have decent (real-time) fault-tolerance would be similar to creating a new VM. Since creating a VM is difficult to do properly, and testing is required after its completion, it makes much more sense to use the Erlang VM since it has native real-time fault-tolerance that is already used in commercial products.