[lxc-users] NUMA and LXC

[Serge Hallyn]

lxc.cgroup.cpuset.mems = 1

Quoting CDR (venefax at gmail.com):
> I think we need to add a configuration to the global lxc.conf whereas
> any given container may run only on one NUMA node, and if that is not
> possible, it should not even start.
> 
> The performance for a container that is contained, so to speak, in  a
> single NUMA node, should be much higher that a container that has its
> processes all over the place.
> 
> I noticed this in Hyper-V virtual machines, where you may set this
> restriction. The performance as measured by hdparm tT  --direct is
> twice than a virtual machine started without this feature.
> 
> This is the distance between nodes, as reported by numactl --hardware
> 
> node distances:
> node   0   1   2   3
>   0:  10  20  20  20
>   1:  20  10  20  20
>   2:  20  20  10  20
>   3:  20  20  20  10
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