== 256k-oldbin repair threads=4  CPU-s: median of both copies of each arm (n legs); A/A = worst |X - X2| / min over the reps; verdict clears the A/A floor or is UNRESOLVED
      m |     fold    force     F/T |   aa_F   aa_T  floor | verdict |      wF      wT  wF/wT | foreign max | peak MB force/fold
    320 |    38.16    38.34   0.995 |   4.7%   1.3%   4.7% | unres   |    8.05    8.38  0.961 | 42% (8 legs) | 4137/569
    352 |    39.91    38.88   1.027 |   0.7%   1.1%   1.1% | ntt     |    8.59    8.53  1.008 | 75% (8 legs) | 4137/578
    384 |    42.34    39.23   1.079 |   2.8%   1.8%   2.8% | ntt     |    9.19    8.55  1.074 | 56% (8 legs) | 4138/586
  crossover (log-interpolated, median): CPU m ~ 325   wall m ~ 347
  foreign CPU over 24 legs: median 13% of a core, max 75% (after-leg median 29%)