866 MB db/data.mdb 149 MB test.bin 95 MB json.zip --- hyperfine -n print -n print2 -n zip-print -w 100 -m 100 ".\target\release\chgk_ledb.exe print 444" ".\target\release\chgk_ledb.exe print2 444" ".\target\release\chgk_ledb.exe zip-print 4 84" Benchmark 1: print Time (mean ± σ): 16.9 ms ± 5.0 ms [User: 5.5 ms, System: 13.4 ms] Range (min … max): 14.5 ms … 65.1 ms 107 runs Benchmark 2: print2 Time (mean ± σ): 16.4 ms ± 5.2 ms [User: 4.9 ms, System: 13.2 ms] Range (min … max): 13.9 ms … 67.5 ms 110 runs Benchmark 3: zip-print Time (mean ± σ): 38.3 ms ± 7.4 ms [User: 13.5 ms, System: 22.1 ms] Range (min … max): 32.8 ms … 91.7 ms 100 runs Summary 'print2' ran 1.04 ± 0.45 times faster than 'print' 2.35 ± 0.87 times faster than 'zip-print'