Rate ikegami_sort   ikegami        op op_nosort
ikegami_sort   0.345/s           --       -1%      -68%      -88%
ikegami        0.348/s           1%        --      -68%      -88%
op              1.08/s         214%      212%        --      -63%
op_nosort       2.90/s         738%      733%      167%        --