基于对等模式的虚拟计算环境下的一种任务调度算法

A Scheduling Algorithm Based on Peer-to-Peer Mode in Virtual Computing

基于对等模式的虚拟计算系统体系结构,提出一种基于加权随机和反馈机制的任务调度算法.选定的调度节点首先对资源进行按需筛选和静态量化排序,继而对权重递减的资源进行随机选择,然后获取相应动态信息进行过载过滤及排序得到最终资源,最后通过反馈机制实现算法对系统负载的自适应性.实验表明该算法有效避免了系统瓶颈,平衡了负载,具有较好的自适应性.

Scheduling algorithm was always a hot topic in virtual computing environment.In order to elimanate system bottleneck and balance load dynamicly. A distributed scheduling algorithm based on weighted random and feedback mechanisms was proposed in this paper. At first the chosen distributed scheduling host chose resources by needs and made static quantification, and then sorted them; Secondly the algorithm chose resources from which sorted by weight randomly, And then it acquired corresponding dynamic information to make load filterate and sort the left. At last it achieved the self-adaptivity to system load through feedback mechanisms. The experiment shows that the algorithm has avoided the system bottleneck effectively and has achieved balanced load as well as self-adaptability to it.