playing with numa

draft

introduction

check if you got a numa-capable cpu and numa-enabled system or hypervisor

dmesg | grep -i numa
lscpu | grep Thread
lscpu | grep NUMA
xl dmesg | grep -i numa

apt install numactl hwloc

# !opteron
#apt install numatop

slackpkg install libpciaccess

sbopkg -i numactl
sbopkg -i hwloc

numactl --show
hwloc-info
hwloc-ls

xen has a nice trick

cpupool-numa-split  Splits up the machine into one CPU pool per NUMA node

AMD Opteron(tm) Processor 6136

==> CPU is not supported!