Hello,
The average queue wait time would not be good in my opinion. Because when a new build is added to the build queue, the average wait time would be decreased sharply in the graph. It would not be intuitive to have a decreased value for some time when a build is added in the queue, like when a build is removed. It would be better to have a value increasing slowly when a build is added in the queue.
So I have added a graph of the sum of the waiting durations of the builds in the build queue.
It is in /monitoring/nodes of the Jenkins monitoring plugin, next to the build queue length.
If you want the average wait time, you can still divide the sum by the build queue length for the same time in the graphs.
It will be in the next release (1.80). You can download a snapshot build at:
bye,
Emeric