The kernel numbers the whole machine's threads in one run and deals them out a
socket at a time, twice: nexus's first CPU listed C0–C9 and C20–C29, its second
C10–C19 and C30–C39. Each CPU now lists its own twenty as C0–C19; the kernel's
number is in the row's tooltip.
Co-Authored-By: Claude <noreply@anthropic.com>