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Numa and virtual sockets question
I have a quick question around numa and adding more than one sockets.
I have a host that has 2 CPUs. I also run SQL Server 2008 r2 and it supports 4 cores per processor so I have the guest with two sockets currently. If I want to enable numa for this host, would it matter how many sockets I assign to the guest that runs the SQL server, am I stuck with one socket?
I have a host that has 2 CPUs. I also run SQL Server 2008 r2 and it supports 4 cores per processor so I have the guest with two sockets currently. If I want to enable numa for this host, would it matter how many sockets I assign to the guest that runs the SQL server, am I stuck with one socket?
ASKER
The configuration I was using is 2 X virtual sockets with 4 X vcpu to each socket. However my host has 2 cpus, 6 cores per cpu, 24 logical.
So if I was using sticking to numa, I would assign something like 6 virtual sockets and 1 vcpu each?
So if I was using sticking to numa, I would assign something like 6 virtual sockets and 1 vcpu each?
That would be correct, always assign vCPUs (not cores!)
ASKER
Can you just clarify that? when you say always assign vCPUs and not cores. I have H/T on my cpus, so say I want my machine to have two cores (sockets) for licensing reasons, how can I be sure that I'm staying in the numa boundary by amount of vcpus I assign or have I already stepped outside of it?
Is there an example you could give that would be correct with numa and my host, where I have 8 vCPU and at least 2 vSockets?
Thanks!
Is there an example you could give that would be correct with numa and my host, where I have 8 vCPU and at least 2 vSockets?
Thanks!
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SOLUTION
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Do you not have currently 4 vCPU allocated x 1 Core ?
see here
http://blogs.vmware.com/vsphere/2013/10/does-corespersocket-affect-performance.html