According to Wikipedia, “SpeedStep is a trademark for a series of dynamic frequency scaling technologies (codenamed Geyserville and including SpeedStep, SpeedStep II, and SpeedStep III) built into some Intel microprocessors that allow the clock speed of the processor to be dynamically changed (to different P-states) by software. Now let’s have a look at the “CPU Power Management” settings.īIOS => Advanced => Advanced Processor Options => CPU power ManagementĮIST is the abbreviation of: Enhanced Intel SpeedStep. In this post, I have already explained some of the “Advanced Processor Options”. Now it is time for some advanced setting. Wikipedia provides some compact background information: With a little help from Google, you will find this information from Intel: In this example, the ML110 G6 is equipped with an Intel Xeon X3430 CPU. Today, both Intel and AMD have a wide range of CPUs with many different options.
Now it is time getting to know your processor. In case you have VMware ESXi already installed, you can also determine the CPU type from the vSphere Client, under Configuration. The first question is, which processor is installed? A HP ML110 G6 will show the CPU type during the boot process. However the other models do support Hyperthreading. The X3430 does not support Hyperthreading, which makes this option irrelevant. Example: the ML110 G6 supports Intel Xeon X3430, X3450, X3460, In the BIOS under “Advanced Processor Options” there is the “Processor Hyper-Threading” option. In this post, I will show you how to deal with some “CPU Power Management” settings on a HP ML110 G6 server.īefore you start, make sure which CPU’s are supported in the server, some BIOS settings are not relevant for your CPU. That makes it difficult to choose the correct settings. While writing this post, I stumbled onto some BIOS settings, I did not fully understand. Poorly configured BIOS settings can have major performance impact on the installed OS and default settings are not automatically the best settings. Before installing VMware ESXi (or any other OS) it is good practice to explore the BIOS of the server hardware.
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