smarm tokio-favored benchmarks
available parallelism: 1 threads
ITERS=15 (+1 warmup, discarded)
STORM_BACKGROUND=8, STORM_SPAWN=10000, MPSC=32×10000, TIMER_ACTORS=10000 (1–10 ms), SCALING_N=400000/64

================================================================================
  spawn_storm_busy: 8 bg yielders + 10000 zero-work spawns
================================================================================
                   runtime |       result |  median µs |     min µs |     max µs
--------------------------------------------------------------------------------
            smarm 1-thread |        10000 |     105512 |     102322 |     120552
            smarm 1-thread |        10000 |     107113 |     104048 |     112377
      tokio current_thread |        10000 |       2222 |       2124 |       2506
        tokio multi-thread |        10000 |       4546 |       3833 |       7305

================================================================================
  mpsc_contention: 32 producers × 10000 msgs → 1 consumer
================================================================================
                   runtime |       result |  median µs |     min µs |     max µs
--------------------------------------------------------------------------------
            smarm 1-thread |       320000 |      10456 |      10331 |      10639
            smarm 1-thread |       320000 |      10395 |       9201 |      10549
      tokio current_thread |       320000 |      17348 |      16639 |      19061
        tokio multi-thread |       320000 |      18628 |      17499 |      19298

================================================================================
  many_timers: 10000 actors sleeping 1–10 ms
================================================================================
                   runtime |       result |  median µs |     min µs |     max µs
--------------------------------------------------------------------------------
            smarm 1-thread |        10000 |     120242 |     116239 |     127200
            smarm 1-thread |        10000 |     121023 |     113997 |     127826
      tokio current_thread |        10000 |      13581 |      13182 |      14415
        tokio multi-thread |        10000 |      14266 |      14084 |      14843

================================================================================
  multi_thread_scaling: primes in [2, 400000) across 64 workers
================================================================================
                   runtime |       result |  median µs |     min µs |     max µs
--------------------------------------------------------------------------------
            smarm 1-thread |        33860 |      19852 |      19601 |      22679
      tokio multi 1-thread |        33860 |      19638 |      18994 |      20102