常常闻声有人说用windows 7玩收集游戏的时辰收集延时较量高，也就是ping比平常xp的时辰高一点，一向找不到缘故起因，很苦恼。本日我们终于找到来由了，原本是Win7的一个处事在捣蛋，这个处事叫：Multimedia Class Scheduler。

　　这个处事的官方表明是：

　　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

　　就是这个处事让我的PING云云高，题目是找到了，那么我们怎样办理呢？很简朴，禁用它就行了。

　　禁用要领：开始--运行-regedit，睁开[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Audiosrv]双击打开右侧的DependOnService项目，把MMCSS删除（万万别删到其他的），最后生涯退出。

　　重启电脑后配置才会见效，然后随处事里封锁并禁用Multimedia Class Scheduler，再进游戏看看有没有进步呢。