>> >> Without this option but changing SMT level during runtime using >> ppc64_cpu —smt=<level>, the SMT level is not retained after >> cpu core add. > > That's because ppc64_cpu is not using the sysfs SMT control file, it's > just onlining/offlining threads manually. > > If you run: > $ ppc64_cpu --smt=4 > > And then also do: > > $ echo 4 > /sys/devices/system/cpu/smt/control > > It should work as expected? Thanks Michael. Yes this works. The SMT level is preserved after a core add. - Sachin
