摘要
The master node of the White Rabbit system(WRS)^([1])is the core device that sends down control message.It is a Zynq chip running a Linux kernel.Its function is to package the control data and time information then pass it to the logic unit on the PL side.The logic unit encapsulates the data and sends it to downstream devices.The improvement of the time performance of sending data on master node is an important part for the time performance of the entire WRS.
