PCG_NOBJECTS_NORMAL
u_int slop = PCG_NOBJECTS_NORMAL * (ncpu - 1);
pc->pc_pcgsize = PCG_NOBJECTS_NORMAL;
KASSERT(pcg->pcg_size == PCG_NOBJECTS_NORMAL);
(PCG_NOBJECTS_NORMAL - 1) * sizeof(pcgpair_t);