Example: Convert weights of Fair Scheduler queues
By reviewing the example of how you can convert the Fair Scheduler queue weights to Capacity Scheduler queue capacity (percentage relative to its parents) you can understand the Fair Scheduler conversion using the fs2cs conversion utility.
Capacity Scheduler equivalent (capacity)
The fs2cs conversion utility ensures that all percentages of direct children under one parent queue add up exactly to 100.000%, as it is demonstrated in the table. For example, all queues under root.users: root.users.alice + root.users.bob + root.users.charlie = 100.000%.
Weights are converted into percentage-based capacities the following way: On queue-level root, there are 2 queues: default and users. Because it is specified as 10 + 30 weights (40 altogether), 1 “unit of weight” is 2.5%. This is why root.default has 25% and root.users has 75% of the capacity. This calculation can be applied to all queue-levels.