禁用Windows Server 2008 R2中的CPU扩展

如何在 Windows Server 2008 R2中禁用CPU电源管理扩展?

设置控制面板后,电源管理计划性能然后重新启动 – CPUID’s Cpu-Z仍然显示时钟速度正在缩放.

Dell R710中有3个主BIOS设置可在电源管理下控制此设置:

OS Control sets the CPU power to OS DBPM, the fan power to Minimum Power, and the memory power to Maximum Performance. In this setting, all processor performance information is passed from the system BIOS to the operating system for control. The operating system sets the processor performance based on processor utilization.

Active Power Controller sets the CPU power to System DBPM, the fan power to Minimum Power, and the memory power to Maximum Performance. The BIOS sets the processor performance based on processor utilization.

Maximum Performance sets all fields to Maximum Performance.

资料来源:http://support.dell.com/support/systemsinfo/document.aspx?c=us&cs=555&l=en&s=biz&~file=/systems/pet410/en/hom/html/syssetup.htm

我们将它设置为“System DBPM”,因此它忽略了操作系统设置.

值得注意的是,这正在深入研究为什么我们的一些全文SQL查询需要这么长时间.在此更改后,我们发现这些查询从平均1285毫秒降至335毫秒.

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