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Update benchmarks
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‎README.md

Lines changed: 35 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -39,45 +39,44 @@ Compared to the previous implementation of `std::collections::HashMap` (Rust 1.3
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With the hashbrown default AHash hasher:
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```text
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name oldstdhash ns/iter hashbrown ns/iter diff ns/iter diff % speedup
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insert_ahash_highbits 20,846 7,397 -13,449 -64.52% x 2.82
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insert_ahash_random 20,515 7,796 -12,719 -62.00% x 2.63
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insert_ahash_serial 21,668 7,264 -14,404 -66.48% x 2.98
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insert_erase_ahash_highbits 29,570 17,498 -12,072 -40.83% x 1.69
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insert_erase_ahash_random 39,569 17,474 -22,095 -55.84% x 2.26
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insert_erase_ahash_serial 32,073 17,332 -14,741 -45.96% x 1.85
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iter_ahash_highbits 1,572 2,087 515 32.76% x 0.75
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iter_ahash_random 1,609 2,074 465 28.90% x 0.78
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iter_ahash_serial 2,293 2,120 -173 -7.54% x 1.08
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lookup_ahash_highbits 3,460 4,403 943 27.25% x 0.79
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lookup_ahash_random 6,377 3,911 -2,466 -38.67% x 1.63
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lookup_ahash_serial 3,629 3,586 -43 -1.18% x 1.01
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lookup_fail_ahash_highbits 5,286 3,411 -1,875 -35.47% x 1.55
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lookup_fail_ahash_random 12,365 4,171 -8,194 -66.27% x 2.96
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lookup_fail_ahash_serial 4,902 3,240 -1,662 -33.90% x 1.51
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```
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| name | oldstdhash ns/iter | hashbrown ns/iter | diff ns/iter | diff % | speedup |
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|:------------------------|:-------------------:|------------------:|:------------:|---------:|---------|
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| insert_ahash_highbits | 18,865 | 8,020 | -10,845 | -57.49% | x 2.35 |
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| insert_ahash_random | 19,711 | 8,019 | -11,692 | -59.32% | x 2.46 |
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| insert_ahash_serial | 19,365 | 6,463 | -12,902 | -66.63% | x 3.00 |
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| insert_erase_ahash_highbits | 51,136 | 17,916 | -33,220 | -64.96% | x 2.85 |
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| insert_erase_ahash_random | 51,157 | 17,688 | -33,469 | -65.42% | x 2.89 |
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| insert_erase_ahash_serial | 45,479 | 14,895 | -30,584 | -67.25% | x 3.05 |
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| iter_ahash_highbits | 1,399 | 1,092 | -307 | -21.94% | x 1.28 |
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| iter_ahash_random | 1,586 | 1,059 | -527 | -33.23% | x 1.50 |
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| iter_ahash_serial | 3,168 | 1,079 | -2,089 | -65.94% | x 2.94 |
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| lookup_ahash_highbits | 32,351 | 4,792 | -27,559 | -85.19% | x 6.75 |
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| lookup_ahash_random | 17,419 | 4,817 | -12,602 | -72.35% | x 3.62 |
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| lookup_ahash_serial | 15,254 | 3,606 | -11,648 | -76.36% | x 4.23 |
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| lookup_fail_ahash_highbits | 21,187 | 4,369 | -16,818 | -79.38% | x 4.85 |
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| lookup_fail_ahash_random | 21,550 | 4,395 | -17,155 | -79.61% | x 4.90 |
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| lookup_fail_ahash_serial | 19,450 | 3,176 | -16,274 | -83.67% | x 6.12 |
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With the libstd default SipHash hasher:
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```text
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name oldstdhash ns/iter hashbrown ns/iter diff ns/iter diff % speedup
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insert_std_highbits 32,598 20,199 -12,399 -38.04% x 1.61
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insert_std_random 29,824 20,760 -9,064 -30.39% x 1.44
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insert_std_serial 33,151 17,256 -15,895 -47.95% x 1.92
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insert_erase_std_highbits 74,731 48,735 -25,996 -34.79% x 1.53
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insert_erase_std_random 73,828 47,649 -26,179 -35.46% x 1.55
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insert_erase_std_serial 73,864 40,147 -33,717 -45.65% x 1.84
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iter_std_highbits 1,518 2,264 746 49.14% x 0.67
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iter_std_random 1,502 2,414 912 60.72% x 0.62
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iter_std_serial 6,361 2,118 -4,243 -66.70% x 3.00
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lookup_std_highbits 21,705 16,962 -4,743 -21.85% x 1.28
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lookup_std_random 21,654 17,158 -4,496 -20.76% x 1.26
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lookup_std_serial 18,726 14,509 -4,217 -22.52% x 1.29
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lookup_fail_std_highbits 25,852 17,323 -8,529 -32.99% x 1.49
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lookup_fail_std_random 25,913 17,760 -8,153 -31.46% x 1.46
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lookup_fail_std_serial 22,648 14,839 -7,809 -34.48% x 1.53
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```
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|name | oldstdhash ns/iter | hashbrown ns/iter | diff ns/iter | diff % | speedup |
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|:------------------------|:-------------------:|------------------:|:------------:|---------:|---------|
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|insert_std_highbits |19,216 |16,885 | -2,331 | -12.13% | x 1.14 |
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|insert_std_random |19,179 |17,034 | -2,145 | -11.18% | x 1.13 |
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|insert_std_serial |19,462 |17,493 | -1,969 | -10.12% | x 1.11 |
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|insert_erase_std_highbits |50,825 |35,847 | -14,978 | -29.47% | x 1.42 |
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|insert_erase_std_random |51,448 |35,392 | -16,056 | -31.21% | x 1.45 |
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|insert_erase_std_serial |87,711 |38,091 | -49,620 | -56.57% | x 2.30 |
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|iter_std_highbits |1,378 |1,159 | -219 | -15.89% | x 1.19 |
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|iter_std_random |1,395 |1,132 | -263 | -18.85% | x 1.23 |
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|iter_std_serial |1,704 |1,105 | -599 | -35.15% | x 1.54 |
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|lookup_std_highbits |17,195 |13,642 | -3,553 | -20.66% | x 1.26 |
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|lookup_std_random |17,181 |13,773 | -3,408 | -19.84% | x 1.25 |
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|lookup_std_serial |15,483 |13,651 | -1,832 | -11.83% | x 1.13 |
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|lookup_fail_std_highbits |20,926 |13,474 | -7,452 | -35.61% | x 1.55 |
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|lookup_fail_std_random |21,766 |13,505 | -8,261 | -37.95% | x 1.61 |
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|lookup_fail_std_serial |19,336 |13,519 | -5,817 | -30.08% | x 1.43 |
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## Usage
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