vector-hashtables

A brief history of this library is given in this blog post.

Benchmarks vs hashtables

(and vector where relevant)

Benchmarks below are produced under GHC 9.2.5, and can be reproduced locally with

cabal bench --benchmark-options="--csv results.csv"
bench-show report results.csv

(You will need the bench-show tool, which is available from Hackage.)

Benchmark                                                          default(ns)
----------------------------------------------------------------- ------------
Comparison/1000/insert/hashtables basic                               47112.15
Comparison/1000/insert/vector-hashtables boxed                        22941.55
Comparison/1000/insert/vector-hashtables unboxed keys                 22338.54
Comparison/1000/insert/vector-hashtables                              19460.33
Comparison/1000/insert/mutable vector boxed                            3216.07
Comparison/1000/insert/mutable vector                                   659.46
Comparison/1000/insert (resize)/hashtables basic                     158026.86
Comparison/1000/insert (resize)/vector-hashtables boxed               42164.21
Comparison/1000/insert (resize)/vector-hashtables unboxed keys        40334.65
Comparison/1000/insert (resize)/vector-hashtables                     37761.08
Comparison/1000/insert, delete/hashtables basic                       85218.96
Comparison/1000/insert, delete/vector-hashtables                      36199.84
Comparison/1000/find/hashtables basic                                 33857.19
Comparison/1000/find/vector-hashtables                                14205.24
Comparison/1000/find/vector-hashtables (frozen)                       12257.88
Comparison/1000/lookupIndex/hashtables basic                          31842.70
Comparison/1000/lookupIndex/vector-hashtables                         14140.17
Comparison/1000/fromList/hashtables basic                            161048.28
Comparison/1000/fromList/vector-hashtables                            48052.28
Comparison/1000/toList/hashtables basic                                9569.82
Comparison/1000/toList/vector-hashtables                              12600.58
Comparison/10000/insert/hashtables basic                             983062.29
Comparison/10000/insert/vector-hashtables boxed                      225218.39
Comparison/10000/insert/vector-hashtables unboxed keys               212758.35
Comparison/10000/insert/vector-hashtables                            186573.02
Comparison/10000/insert/mutable vector boxed                          37415.65
Comparison/10000/insert/mutable vector                                 6956.86
Comparison/10000/insert (resize)/hashtables basic                   1696364.18
Comparison/10000/insert (resize)/vector-hashtables boxed             479122.17
Comparison/10000/insert (resize)/vector-hashtables unboxed keys      422759.56
Comparison/10000/insert (resize)/vector-hashtables                   352441.24
Comparison/10000/insert, delete/hashtables basic                    1426337.13
Comparison/10000/insert, delete/vector-hashtables                    359228.91
Comparison/10000/find/hashtables basic                               330890.67
Comparison/10000/find/vector-hashtables                              141525.60
Comparison/10000/find/vector-hashtables (frozen)                     122542.86
Comparison/10000/lookupIndex/hashtables basic                        327065.33
Comparison/10000/lookupIndex/vector-hashtables                       142678.55
Comparison/10000/fromList/hashtables basic                          1641384.65
Comparison/10000/fromList/vector-hashtables                          542530.31
Comparison/10000/toList/hashtables basic                             143188.55
Comparison/10000/toList/vector-hashtables                            274318.45
Comparison/100000/insert/hashtables basic                          10907947.88
Comparison/100000/insert/vector-hashtables boxed                    6932748.81
Comparison/100000/insert/vector-hashtables unboxed keys             5307166.72
Comparison/100000/insert/vector-hashtables                          2368482.76
Comparison/100000/insert/mutable vector boxed                       1794351.95
Comparison/100000/insert/mutable vector                               69989.51
Comparison/100000/insert (resize)/hashtables basic                 22232168.04
Comparison/100000/insert (resize)/vector-hashtables boxed          11420001.24
Comparison/100000/insert (resize)/vector-hashtables unboxed keys    9496935.97
Comparison/100000/insert (resize)/vector-hashtables                 5988321.89
Comparison/100000/insert, delete/hashtables basic                  15119684.92
Comparison/100000/insert, delete/vector-hashtables                  4058662.48
Comparison/100000/find/hashtables basic                             3473800.70
Comparison/100000/find/vector-hashtables                            1431873.00
Comparison/100000/find/vector-hashtables (frozen)                   1225155.68
Comparison/100000/lookupIndex/hashtables basic                      3235041.49
Comparison/100000/lookupIndex/vector-hashtables                     1439338.81
Comparison/100000/fromList/hashtables basic                        22917643.59
Comparison/100000/fromList/vector-hashtables                        8603353.43
Comparison/100000/toList/hashtables basic                           5336633.37
Comparison/100000/toList/vector-hashtables                          9377042.71
Comparison/1000000/insert/hashtables basic                        109193301.77
Comparison/1000000/insert/vector-hashtables boxed                  77176586.83
Comparison/1000000/insert/vector-hashtables unboxed keys           59037764.29
Comparison/1000000/insert/vector-hashtables                        28535981.51
Comparison/1000000/insert/mutable vector boxed                     29709444.79
Comparison/1000000/insert/mutable vector                             866220.55
Comparison/1000000/insert (resize)/hashtables basic               260585504.79
Comparison/1000000/insert (resize)/vector-hashtables boxed        127608418.79
Comparison/1000000/insert (resize)/vector-hashtables unboxed keys  96059752.01
Comparison/1000000/insert (resize)/vector-hashtables               57038345.24
Comparison/1000000/insert, delete/hashtables basic                153182769.34
Comparison/1000000/insert, delete/vector-hashtables                47664402.90
Comparison/1000000/find/hashtables basic                           35821229.20
Comparison/1000000/find/vector-hashtables                          15711648.56
Comparison/1000000/find/vector-hashtables (frozen)                 12885372.25
Comparison/1000000/lookupIndex/hashtables basic                    32210529.62
Comparison/1000000/lookupIndex/vector-hashtables                   14911308.87
Comparison/1000000/fromList/hashtables basic                      446988819.28
Comparison/1000000/fromList/vector-hashtables                      92793579.75
Comparison/1000000/toList/hashtables basic                         66679253.65
Comparison/1000000/toList/vector-hashtables                       105470198.31