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v/cmd/tools/bench/wyhash.v
2020-02-09 10:08:04 +01:00

56 lines
1.3 KiB
V

module main
import (
hash.fnv1a
hash.wyhash
rand
time
)
fn main() {
sample_size := 10000000
min_str_len := 20
max_str_len := 40
println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...')
mut bytepile := []byte
for _ in 0 .. sample_size * max_str_len {
bytepile << byte(40 + rand.next(125 - 40))
}
mut str_lens := []int
for _ in 0 .. sample_size {
str_lens << min_str_len + rand.next(max_str_len - min_str_len)
}
println('Hashing each of the generated strings...')
t0 := time.ticks()
mut start_pos := 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
_ = wyhash.wyhash_c(&str.str, u64(str.len), 1)
start_pos = end_pos
}
t1 := time.ticks()
d1 := t1 - t0
println(' * wyhash4 C: ${d1}ms')
start_pos = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
_ = wyhash.sum64_string(str, 1)
start_pos = end_pos
}
t2 := time.ticks()
d2 := t2 - t1
println(' * wyhash4: ${d2}ms')
start_pos = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
_ = fnv1a.sum64_string(str)
start_pos = end_pos
}
t3 := time.ticks()
d3 := t3 - t2
println(' * fnv1a64: ${d3}ms')
}