基于P2P的用户生产内容视频资源查找策略(4)

来源:网络(转载) 作者:李彦 陈卓 发表于:2012-04-14 12:55  点击:
【关健词】用户生产内容;对等网;资源查找;社会网络;重叠网
图3视频关联度较小时查找视频源节点的百分比 实验对服务器的带宽消耗也进行了比较,对比了 FastSearch、NetTube和C/S架构时视频服务器的带宽消耗。图4中可以看到C/S架构的带宽消耗最大,在同样数量的用户点播请求下

  图3视频关联度较小时查找视频源节点的百分比
  实验对服务器的带宽消耗也进行了比较,对比了
  FastSearch、NetTube和C/S架构时视频服务器的带宽消耗。图4中可以看到C/S架构的带宽消耗最大,在同样数量的用户点播请求下达到了接近4Gbps。FastSearch比NetTube有了更好的改善,能够节约75%的带宽消耗,这是通过进一步增加节点间的数据共享实现的。
  
  图片
  图4视频服务器的带宽消耗对比
  
  4结语
  本文提出了一种基于P2P的在线视频资源查找策略,该策略在前后两次点播的视频资源的关联关系较小的时候仍然可以通过较小的资源开销获得较大的资源查找效率。通过实验仿真表明了FastSearch比现有的系统在资源查找效率上具有更优的效率。下一步,将继续通过在现实系统中部署FastSearch策略并进一步对系统加以完善。
  
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