Some tidying done after original write for readability, but no significant perf optimisations. Built with ghc and -O2 flag, ran on i5 CPU @ 4GHz.
» printf '"stack exec -- aoc2022 --day %s"\n' {01..25} | xargs hyperfine
Benchmark 1: stack exec -- aoc2022 --day 01
Time (mean ± σ): 246.4 ms ± 3.2 ms [User: 217.0 ms, System: 30.7 ms]
Range (min … max): 243.9 ms … 255.6 ms 12 runs
Benchmark 2: stack exec -- aoc2022 --day 02
Time (mean ± σ): 252.5 ms ± 9.7 ms [User: 223.0 ms, System: 27.8 ms]
Range (min … max): 244.8 ms … 271.7 ms 11 runs
Benchmark 3: stack exec -- aoc2022 --day 03
Time (mean ± σ): 256.6 ms ± 9.9 ms [User: 227.2 ms, System: 28.8 ms]
Range (min … max): 245.5 ms … 272.7 ms 11 runs
Benchmark 4: stack exec -- aoc2022 --day 04
Time (mean ± σ): 266.7 ms ± 13.0 ms [User: 237.0 ms, System: 26.7 ms]
Range (min … max): 255.0 ms … 289.4 ms 11 runs
Benchmark 5: stack exec -- aoc2022 --day 05
Time (mean ± σ): 273.6 ms ± 15.5 ms [User: 245.0 ms, System: 28.5 ms]
Range (min … max): 257.9 ms … 307.1 ms 11 runs
Benchmark 6: stack exec -- aoc2022 --day 06
Time (mean ± σ): 256.7 ms ± 13.9 ms [User: 224.0 ms, System: 30.7 ms]
Range (min … max): 244.7 ms … 278.6 ms 10 runs
Benchmark 7: stack exec -- aoc2022 --day 07
Time (mean ± σ): 253.9 ms ± 11.0 ms [User: 223.3 ms, System: 28.9 ms]
Range (min … max): 244.5 ms … 274.6 ms 11 runs
Benchmark 8: stack exec -- aoc2022 --day 08
Time (mean ± σ): 306.9 ms ± 11.1 ms [User: 292.8 ms, System: 33.7 ms]
Range (min … max): 297.4 ms … 322.4 ms 10 runs
Benchmark 9: stack exec -- aoc2022 --day 09
Time (mean ± σ): 273.8 ms ± 25.5 ms [User: 250.3 ms, System: 26.2 ms]
Range (min … max): 255.0 ms … 325.7 ms 11 runs
Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet PC without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.
Benchmark 10: stack exec -- aoc2022 --day 10
Time (mean ± σ): 252.0 ms ± 7.8 ms [User: 218.7 ms, System: 28.8 ms]
Range (min … max): 243.8 ms … 267.2 ms 12 runs
Benchmark 11: stack exec -- aoc2022 --day 11
Time (mean ± σ): 447.9 ms ± 13.9 ms [User: 452.9 ms, System: 70.0 ms]
Range (min … max): 428.5 ms … 467.3 ms 10 runs
Benchmark 12: stack exec -- aoc2022 --day 12
Time (mean ± σ): 387.4 ms ± 9.1 ms [User: 373.8 ms, System: 34.3 ms]
Range (min … max): 376.9 ms … 400.7 ms 10 runs
Benchmark 13: stack exec -- aoc2022 --day 13
Time (mean ± σ): 260.1 ms ± 7.2 ms [User: 226.7 ms, System: 31.7 ms]
Range (min … max): 254.2 ms … 275.2 ms 11 runs
Benchmark 14: stack exec -- aoc2022 --day 14
Time (mean ± σ): 716.9 ms ± 12.6 ms [User: 699.5 ms, System: 43.1 ms]
Range (min … max): 699.3 ms … 740.0 ms 10 runs
Benchmark 15: stack exec -- aoc2022 --day 15
Time (mean ± σ): 253.5 ms ± 7.0 ms [User: 222.3 ms, System: 27.4 ms]
Range (min … max): 245.8 ms … 270.6 ms 10 runs
Benchmark 16: stack exec -- aoc2022 --day 16
Time (mean ± σ): 911.0 ms ± 10.6 ms [User: 998.0 ms, System: 78.1 ms]
Range (min … max): 898.5 ms … 934.4 ms 10 runs
Benchmark 17: stack exec -- aoc2022 --day 17
Time (mean ± σ): 758.7 ms ± 16.7 ms [User: 790.9 ms, System: 76.2 ms]
Range (min … max): 729.6 ms … 784.5 ms 10 runs
Benchmark 18: stack exec -- aoc2022 --day 18
Time (mean ± σ): 341.0 ms ± 9.6 ms [User: 332.4 ms, System: 30.9 ms]
Range (min … max): 329.1 ms … 356.4 ms 10 runs
Benchmark 19: stack exec -- aoc2022 --day 19
Time (mean ± σ): 1.786 s ± 0.018 s [User: 1.864 s, System: 0.142 s]
Range (min … max): 1.760 s … 1.816 s 10 runs
Benchmark 20: stack exec -- aoc2022 --day 20
Time (mean ± σ): 3.302 s ± 0.026 s [User: 3.332 s, System: 0.149 s]
Range (min … max): 3.266 s … 3.337 s 10 runs
Benchmark 21: stack exec -- aoc2022 --day 21
Time (mean ± σ): 260.9 ms ± 6.6 ms [User: 233.2 ms, System: 25.6 ms]
Range (min … max): 255.9 ms … 278.8 ms 11 runs
Benchmark 22: stack exec -- aoc2022 --day 22
Time (mean ± σ): 274.0 ms ± 8.8 ms [User: 248.1 ms, System: 28.3 ms]
Range (min … max): 265.5 ms … 289.7 ms 11 runs
Benchmark 23: stack exec -- aoc2022 --day 23
Time (mean ± σ): 2.565 s ± 0.022 s [User: 2.734 s, System: 0.212 s]
Range (min … max): 2.543 s … 2.619 s 10 runs
Benchmark 24: stack exec -- aoc2022 --day 24
Time (mean ± σ): 2.984 s ± 0.049 s [User: 3.608 s, System: 0.418 s]
Range (min … max): 2.943 s … 3.107 s 10 runs
Benchmark 25: stack exec -- aoc2022 --day 25
Time (mean ± σ): 256.9 ms ± 10.2 ms [User: 222.9 ms, System: 29.7 ms]
Range (min … max): 246.8 ms … 274.8 ms 12 runs