Contributor
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vCPU question

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Hi Guys,

i've been looking anywhere but cannot find an answer to my question.

so for lab purposes i installed ESXi 6.0 under a laptop run by a processor i5-5200U

hyperthreading is already on.

this processor supposed to have 4 cores in one socket but in the information i only see 2 on "Processor Cores per socket".

someone have any input of what am i missing here? i was expecting 8 vCPU with 4 cores processor and hyperthreading on.

here is the screenshot:

pastedImage_0.png

regards,

Ricky Lee

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Virtuoso
Virtuoso

i5-5200U is 2 core/4 thread so ESXi can only have 4 logical processors.

https://ark.intel.com/products/85212/Intel-Core-i5-5200U-Processor-3M-Cache-up-to-2_70-GHz

For ESXi to have 8 vCPUs, the CPU needs to be 4 core/8 thread; or for dual socket server/workstation, 2 CPU sockets, each with 4 cores without hyperthreading also results in 8 logical processors.

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4 Replies
Virtuoso
Virtuoso

i5-5200U is 2 core/4 thread so ESXi can only have 4 logical processors.

https://ark.intel.com/products/85212/Intel-Core-i5-5200U-Processor-3M-Cache-up-to-2_70-GHz

For ESXi to have 8 vCPUs, the CPU needs to be 4 core/8 thread; or for dual socket server/workstation, 2 CPU sockets, each with 4 cores without hyperthreading also results in 8 logical processors.

View solution in original post

Expert
Expert

Hyper-threading: For each processor core that is physically present, the operating system addresses two virtual (logical) cores and shares the workload between them when possible.

2 cores with Hyper-threading are 4 threads.

Hyper-threading - Wikipedia

http://it-pilot.ru
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Enthusiast
Enthusiast

I totally agree with whats been mentioned before and also the link shared by bluefirestorm

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Contributor
Contributor

Thank you guys,

i was under impression that all i5 family has 4 cores. turns out that was not right.

Ricky

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