无垠博客

        常有朋友说用windows 7系统玩网络游戏的时候，网络延时比较厉害，一直找不到解决这个问题的方法，很被朋友们鄙视。

        比较辛运的是，终于找到原因了，原来是Windows7的一个服务在作怪，这个服务的名字叫：Multimedia Class Scheduler，以下是关于Multimedia Class Scheduler服务的官方解释：
The Multimedia Class Scheduler service (MMCSS) enables multimedia applications to ensure that their time-sensitive processing receives prioritized access to CPU resources. This service enables multimedia applications to utilize as much of the CPU as possible without denying CPU resources to lower-priority applications. MMCSS uses information stored in the registry to identify supported tasks and determine the relative priority of threads performing these tasks. Each thread that is performing work related to a particular task calls the AvSetMmMaxThreadCharacteristics or AvSetMmThreadCharacteristics function to inform MMCSS that it is working on that task.
For an example of a program that uses MMCSS, see Exclusive-Mode Streams

就是这个服务导致了朋友们在玩网游的时候出现延时较高的原因，问题是找到了，网络游戏延迟高怎么办呢？接下来，我们就来解决这个问题。禁用它！
        开始--运行-regedit，展开[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Audiosrv]双击打开右侧的DependOnService项目，把MMCSS删除，退出注册表编辑器。
       重新启动电脑后，在服务里关闭并禁用Multimedia Class Scheduler服务，就可以了。