8 Core Hardware - Single Core VM

[Landmine]

Is it possible to set a VM to only have a single core and have that single VM core use the power of multiple cores? Running a program that will only use one core and I'm trying to find a way to make it work better.

Thank you.

 

[rflcptr]

If you set a VM to use a single core, the guest OS (and any software run) is only exposed to 1 core.

 

[NetJunkie]

Yep. The guest OS won't try and schedule multiple threads to be executed on more than one core because it isn't aware of more.

 

[402blownstroker]

No, you can not map multiple host cores to a single guest core.

 

[Landmine]

Thank you for the clear answers.

 

[geiger]

Can only use a single socket or single core?

http://andywolf.com/vmware-virtual-sockets-vs-cores-per-socket-for-app-that-only-uses-one-cpu/

 

[Nate7311]

I guess I don't get that AndyWolf post. Because the isues are all based on licensing. SQL Express is limited to 1 socket. Trying to add multiple sockets rather than cores to a single socket in an era where so many programs are limited by socket rather than core is dumb.

 

[NetJunkie]

His point is that by default if you give a VM 4 vCPUs it's exposed to the guest as four sockets, not a single socket with four cores. So you can "fool" the guest and apps by changing that default.

 

[Nate7311]

Excatly. That what doesn't make sense to me. Why did he set the VM up as a multi-socket rather than Multi-core from the beginning? No advantage.

 

[Landmine]

If I learned anything from Toy Story, it is do not trust people named Andy.