Results of tests conducted to see if there is a difference in performance for an 8 vCPU Windows 2008 R2 VM.
Summary: It makes no difference !
The test wanted to ascertain if there was a difference in
performance between the following 3 configurations:
1 Socket 4 Cores
2 Sockets 2 Cores
4 Sockets 1 Core
A single Windows 2008 R2 VM was used.
PassMark PerformanceTest software was installed onto the VM –
only the CPU Mark Test was used.
http://www.passmark.com/products/pt.htm
The TEST:
The VM started off configured with 1 Socket and 4 Cores.
The PassMark CPU test was run – the results collected by
screenshot (see below).
The VM was then shutdown. The VM settings were changed to a
2 Socket 2 Core configuration and the VM was then powered back on.
The CPU test was run again and the results collected before
the VM was shutdown and reconfigured with 4 Sockets and 1 Core.
After powering on the PassMark CPU Test was run again and
the results collected.
The Test was repeated an additional 2 times.
There were no other VMs running on the ESX host at the time.
The following is a summary of the results:
Place
|
Configuration
|
Score
|
1
|
1 Socket 4 Cores
|
4811.7
|
2
|
2 Sockets 2 Cores
|
4811.3
|
3
|
4 Sockets 1 Core
|
4809.2
|
4
|
1 Socket 4 Cores
|
4808
|
5
|
2 Sockets 2 Cores
|
4806.9
|
6
|
4 Sockets 1 Core
|
4806.6
|
7
|
4 Sockets 1 Core
|
4789.4
|
8
|
2 Sockets 2 Cores
|
4651.6
|
9
|
1 Socket 4 Cores
|
4564.4
|
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