hyperthreading (HT) in vSphere with Nehalem Xeon 5500 and their effect on the number of vCPU

Hi guys

The title says it all I think. HT is enabled on the new Xeon 5500, what effect does exactly in vSphere:

(1) are there more vCPUs per socket? (E.g., 4 cores * 2 threads = 8 vCPUs presentable). or;

(2) no County vCPU remains, with processes to become potentially more effective due to the additional thread, and;

(3) are there applications or use cases for which hyperthreading is not recommended?

Someone at - it with the 5500 new gear and vSphere had the chance to test HT in their lab to their workloads?

a core or ht cpu is not called a vCPU. a vCPU is simply a virtual CPU that is part of a virtual machine configuration. Now HT would be double the amount of options the Planner must schedule vCPUs. From what I heard HT and the performance has been improved majorly with vSphere and he recommended to keep active.

No it won't effect on licensing, it is taking physical and physical basis.

I expect soon a few details/new performance data from VMware implementation team!

Duncan

VCDX | VMware communities user moderator

-

Tags: VMware

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