CPU-Pool in Xenserver 8.2, Numa awareness

[Matthias Frei]

Hi there,

i read a lot about CPU-Pools and Numa awareness.

Our Server has 4 Numa-Nodes, but only one CPU-Pool is created by Xenserver.

With xl vcpu-list i see that vcpus are changing cpu every second, no consideration on numa.

 

I know about numa-split command and migrate VM's to pools created by this command.

But VM's always starts at pool0 after restart.

Is there a way to change config permanently?

 

Thanks a lot

Matthias

[Tobias Kreidl]

You can pin VMs to specific CPU cores, would be one option. Just 4 NUM nodes is very small. The order in which you start VMs is also important.

Google my articles and others on XenServer and NUMA for some additional information.

 

-=Tobias