Configuring VM - single or multiple sockets?

[chrispage1]

Hi,

I was just wondering if there is any particular benefit in configuring a VM to use multiple sockets, e.g. 2 sockets, 5 cores, vs assigning it 1 socket, 10 cores?

I'm running some benchmarks trying to squeeze as much performance as I can and it seems that 1 socket, 10 cores is a little more performant.

Thanks,
Chris.

 

[leesteken]

I was just wondering if there is any particular benefit in configuring a VM to use multiple sockets, e.g. 2 sockets, 5 cores, vs assigning it 1 socket, 10 cores?

In a NUMA situation, it can help with memory performance to use the same number of virtual sockets as physical sockets (according to the manual).

 

[chrispage1]

Thank you - I'll stick with 5 cores & 2 sockets for now in the hope it helps overall!

Chris.