https://github.com/llogiq/newlinebench

https://github.com/llogiq/newlinebench

Last synced: about 1 month ago
JSON representation

• Host: GitHub
• URL: https://github.com/llogiq/newlinebench
• Owner: llogiq
• License: mit
• Created: 2016-09-23T02:22:32.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-09-26T16:18:20.000Z (over 8 years ago)
• Last Synced: 2025-03-24T00:38:02.829Z (about 2 months ago)
• Language: Rust
• Size: 6.84 KB
• Stars: 22
• Watchers: 3
• Forks: 2
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Count newlines really fast

Benchmark results on my machine (Core i5-4200M):

```

running 25 tests

test check ... ignored

test test_fast_newlines               ... bench:       2,175 ns/iter (+/- 620)

test test_fast_nonewlines             ... bench:       2,176 ns/iter (+/- 344)

test test_fast_random                 ... bench:      32,466 ns/iter (+/- 983)

test test_fast_somenewlines           ... bench:          16 ns/iter (+/- 2)

test test_faster_newlines             ... bench:       2,940 ns/iter (+/- 527)

test test_faster_nonewlines           ... bench:       2,938 ns/iter (+/- 956)

test test_faster_random               ... bench:      43,954 ns/iter (+/- 1,720)

test test_faster_somenewlines         ... bench:          25 ns/iter (+/- 5)

test test_fastest_newlines            ... bench:       1,286 ns/iter (+/- 167)

test test_fastest_nonewlines          ... bench:       1,284 ns/iter (+/- 383)

test test_fastest_random              ... bench:      19,039 ns/iter (+/- 5,534)

test test_fastest_somenewlines        ... bench:          14 ns/iter (+/- 3)

test test_hyperscreaming_newlines     ... bench:         716 ns/iter (+/- 90)

test test_hyperscreaming_nonewlines   ... bench:         712 ns/iter (+/- 239)

test test_hyperscreaming_random       ... bench:      10,901 ns/iter (+/- 492)

test test_hyperscreaming_somenewlines ... bench:          12 ns/iter (+/- 2)

test test_screaming_newlines          ... bench:       1,180 ns/iter (+/- 258)

test test_screaming_nonewlines        ... bench:       1,180 ns/iter (+/- 140)

test test_screaming_random            ... bench:      17,565 ns/iter (+/- 740)

test test_screaming_somenewlines      ... bench:          10 ns/iter (+/- 3)

test test_slow_newlines               ... bench:       5,698 ns/iter (+/- 814)

test test_slow_nonewlines             ... bench:       3,704 ns/iter (+/- 797)

test test_slow_random                 ... bench:      67,856 ns/iter (+/- 2,345)

test test_slow_somenewlines           ... bench:          31 ns/iter (+/- 2)

```

I should note that this machine does have POPCNT, though it does not appear to

make any difference.