What does a partition with a zero budget mean?
Threads in a partition with a defined budget of zero will run if all non-zero partitions are sleeping. They will also run if they inherit the partition of thread which sends a message. Zero budget partitions are most useful to contain resmgrs with no internal daemon threads. They’re also useful for turning off unused partitions. How do we guarantee that the sum of all partition’s budgets is 100% At startup Neutrino creates the first partition, System, having 100% budget. Thereafter, when a thread running in a partition creates a new partition, the current partition is considered to be the parent and the new partition is the child. The budget of the child is always take from the budget of the parent, and may never reduce the parent’s budget below zero. So creating partitions produces a hierarchy of partitions that subdivide System’s original budget of 100%.
