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UC on UCS & Hyper-threading

bluejays
Beginner
Beginner

Hello, All,

I am trying to find out the Cisco recommended UCS BIOS setting for UC on UCS deployment. Should I turn on Hyper-threading for ESXi if the CPU supports it?

Is there a document just to talk about any BIOS/setup recommendation setting specifically for UC on UCS deployment?

Thanks,

3 Replies 3

cbyington
Contributor
Contributor

I am also curious on what is recommended in regards to hyper-threading for UCS. Does anyone have any information.

Steven Griffin
Enthusiast
Enthusiast

Cisco's docwiki site has everything you need to know about UC on UCS. 

The core UC site is here: http://docwiki.cisco.com/wiki/Unified_Communications_in_a_Virtualized_Environment

The answer to your question about hyper-threading can be found here: http://docwiki.cisco.com/wiki/UC_Virtualization_Supported_Hardware#Processors_.2F_CPUs

     Hyper-threading on the CPU should be enabled when available, but the  resulting Logical Cores do not change UC app      rules.  UC rules are based  on 1:1 mapping of physical cores to virtual cores, not Logical Cores to  virtual cores.

-Steven

Please help us make the communities better. Rate helpful posts!

Hi,

Ok then, does it mean that the additional virtual cores (when enabling HT) seen by ESXi shouldn't be mapped with UC Apps? One more, how do you make the difference between a virtual core mapped to a Physical Core and a virtual core mapped on a Logical core in ESX ?

Rgds,

./WM

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