The below report shows the general utilization and flow of the continuous integration services at the ASF.

Build utilization versus bottlenecking:

Generally speaking, the higher the bottlenecking, the less a CI system can be utilized to its full capacity or gauged for whether more capacity is needed, while, conversely, a low bottleneck factor would indicate the build utilization can be more accurately sized up. Four basic scenarios:
Please keep in mind, that some projects have donated build nodes, and may therefore display as using a disproportionally large number of resources, while they may in reality be using very litle if any of our shared resources.