Sure is - just not the one that ships with the default install. You’ll either need to drop in a pre-built GENERIC.MP kernel, or compile the kernel with the multiprocessor support enabled: —> https://www.netbsd.org/ports/sparc/faq.html#smp-cpus I will say - on the SS20 it makes quite a performance difference. — Samuel Furtaw > On Jan 20, 2026, at 8:04 PM, Dennis Clarke <dclarke%blastwave.org@localhost> wrote: > > > On a dual CPU old Sun SPARCStation 20 it seems to be only using one CPU. > > If any one process is running at 100% CPU utilization then the entire > machine reports 0% idle. However there are two CPUs in there. > > > -- > -- > Dennis Clarke > RISC-V/SPARC/PPC/ARM/CISC > UNIX and Linux spoken >