v4r/zstd / v4/zstd: median of per-round ratios [min, max] over 4 rounds
  docs 4000 load: 0.99 [0.96, 1.03]
  docs 4000 prefix: 0.97 [0.89, 0.99]  <-- all rounds faster
  docs 4000 read_all: 0.96 [0.95, 0.97]  <-- all rounds faster
  docs 4000 slice: 0.97 [0.94, 0.98]  <-- all rounds faster
  docs 32000 load: 0.98 [0.97, 1.01]
  docs 32000 prefix: 0.77 [0.73, 0.78]  <-- all rounds faster
  docs 32000 read_all: 0.89 [0.86, 0.90]  <-- all rounds faster
  docs 32000 slice: 0.76 [0.71, 0.77]  <-- all rounds faster
  docs 1000000 load: 0.98 [0.97, 1.01]
  docs 1000000 prefix: 0.95 [0.90, 1.00]
  docs 1000000 read_all: 0.99 [0.95, 1.04]
  docs 1000000 slice: 0.99 [0.97, 1.00]
  json 4000 load: 0.98 [0.92, 1.00]
  json 4000 prefix: 0.95 [0.88, 0.97]  <-- all rounds faster
  json 4000 read_all: 0.94 [0.88, 0.98]  <-- all rounds faster
  json 4000 slice: 0.94 [0.91, 0.96]  <-- all rounds faster
  json 32000 load: 0.97 [0.96, 1.00]  <-- all rounds faster
  json 32000 prefix: 0.69 [0.65, 0.70]  <-- all rounds faster
  json 32000 read_all: 0.99 [0.98, 1.01]
  json 32000 slice: 0.66 [0.64, 0.67]  <-- all rounds faster
  json 1000000 load: 0.99 [0.97, 1.04]
  json 1000000 prefix: 1.00 [0.94, 1.17]
  json 1000000 read_all: 0.98 [0.92, 1.00]
  json 1000000 slice: 1.01 [0.94, 1.03]
  random 4000 load: 0.99 [0.93, 1.00]  <-- all rounds faster
  random 4000 prefix: 0.96 [0.94, 0.97]  <-- all rounds faster
  random 4000 read_all: 0.97 [0.93, 0.98]  <-- all rounds faster
  random 4000 slice: 0.97 [0.95, 0.99]  <-- all rounds faster
  random 32000 load: 0.96 [0.85, 1.00]
  random 32000 prefix: 0.77 [0.73, 0.78]  <-- all rounds faster
  random 32000 read_all: 0.87 [0.84, 0.88]  <-- all rounds faster
  random 32000 slice: 0.72 [0.71, 0.74]  <-- all rounds faster
  random 1000000 load: 1.02 [0.96, 1.06]
  random 1000000 prefix: 0.99 [0.98, 1.02]
  random 1000000 read_all: 1.01 [0.97, 1.03]
  random 1000000 slice: 0.70 [0.68, 0.71]  <-- all rounds faster