在kernel program guide里有如下描述:
The vxworks traditional scheduler provide priority_based preemptive scheduling as well as the option of programmatically initiating round_robin scheduling.
另外,在文档里还发现了另外一段描述:
In most systems,it is not nessary to enable round_robin scheduling,the exception being when multiple copies of the same codes are to be run,such as in a user interface task.