Commander has 3 task queues, long running tasks, scheduled tasks and short running tasks. The default settings for the task queues are 3, 1, 3 respectively. An example of a long running task would be provisioning. An example of a scheduled task would be a scheduled report. An example of a short running task would be power off and instance. In environments with lots of tasks these default numbers can cause a build up of pending tasks in the queues. The article below tells you how to change these values, but doesn't give an example of a starting point to increase them to.
We have found that changing the settings to long=5, scheduled=2 and short=10 provides a good balance of a good queue size without allowing too many concurrent tasks.
What settings have proven optimal in your environment?