huwy
Contributor
Contributor

quick Q about logical processors on ESXi 4.1

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hi there,

On our Esxi 4.1 server we have 2x quad core processors (xeon e5640)

In the VI Client it lists:

processor sockets = 2

cores per socket = 4

and then the bit I don't understand...

logical processors = 16

Can anyone explain why the logical processors = 16 and not 8? Someone asked me and I didn't know the answer!

Cheers,

Huw

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arturka
Expert
Expert

Hi

HT is enabled that's why you see 16 logical processors insted of 8

VCDX77 My blog - http://vmwaremine.com

View solution in original post

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arturka
Expert
Expert

Hi

HT is enabled that's why you see 16 logical processors insted of 8

VCDX77 My blog - http://vmwaremine.com
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huwy
Contributor
Contributor

thanks a lot guys

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ChallengeLogic7
Enthusiast
Enthusiast

So further to this - does that mean I could only have a maximum of 16 virtual machines having 1 vCPU each on this ESXi host?

Is each VM's CPU bound to 1 'core' ?

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arturka
Expert
Expert

So further to this - does that mean I could only have a maximum of 16 virtual machines having 1 vCPU each on this ESXi host?

Is each VM's CPU bound to 1 'core' ?

hi

nope, you can have more than 16 (single vCPU) VMs. Ratio vCPU to pCPU depends on workloads characteristics and pCPU performance

Artur

VCDX77 My blog - http://vmwaremine.com
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