To improve interactive performance of Linux in multi-core systems,this paper designs and implements an improved task scheduling algorithm named Group Fair Schedule(GFS).According to the hardware characteristics of multi-core system,GFS allows to configure a group of CPUs with close affinity to share one task run queue automatically,so that the cost of competitive access,task migration inside a group and run queue load balance between groups can be weighed,and reduces scheduling delay.GFS gives priority to a...