In Erlang you have a "reduction count budget" of 2000 reductions. This is fairly low, less than 1ms of execution, but during that time you have exclusive use of

In Erlang you have a "reduction count budget" of 2000 reductions. This is fairly low, less than 1ms of execution, but during that time you have exclusive use of a CPU. At the end of your budget, you might be preempted, or you might get another window. So you take a bit of a hit to cache, but it's not like you are infinitely context switching. In practice it works fairly well.