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cmd/tools/bench/wyhash.v: minor cleanup of output

pull/6064/head
Delyan Angelov 2020-08-03 19:25:59 +03:00
parent df5625bf68
commit f605022481
1 changed files with 24 additions and 27 deletions
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51
cmd/tools/bench/wyhash.v
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@ -3,15 +3,17 @@ module main
import hash.fnv1a import hash.fnv1a
import hash as wyhash import hash as wyhash
import rand import rand
import time import benchmark
fn main() { fn main() {
rand.seed([u32(42), 0]) rand.seed([u32(42), 0])
mut aaa := u64(0)
sample_size := 10000000 sample_size := 10000000
min_str_len := 20 min_str_len := 20
max_str_len := 40 max_str_len := 40
println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...') println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...')
mut checksum := u64(0)
mut start_pos := 0
mut bgenerating := benchmark.start()
mut bytepile := []byte{} mut bytepile := []byte{}
for _ in 0 .. sample_size * max_str_len { for _ in 0 .. sample_size * max_str_len {
bytepile << byte(rand.int_in_range(40, 125)) bytepile << byte(rand.int_in_range(40, 125))
@ -20,42 +22,37 @@ fn main() {
for _ in 0 .. sample_size { for _ in 0 .. sample_size {
str_lens << rand.int_in_range(min_str_len, max_str_len) str_lens << rand.int_in_range(min_str_len, max_str_len)
} }
bgenerating.measure('generating strings')
println('Hashing each of the generated strings...') println('Hashing each of the generated strings...')
t0 := time.ticks() //
mut start_pos := 0 mut bhashing_1 := benchmark.start()
aaa = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos], len)
aaa ^= wyhash.wyhash_c(&str.str, u64(str.len), 1)
start_pos = end_pos
}
println('aaa: $aaa')
t1 := time.ticks()
d1 := t1 - t0
println(' * wyhash4 C: ${d1}ms')
start_pos = 0 start_pos = 0
aaa = 0 checksum = 0
for len in str_lens { for len in str_lens {
end_pos := start_pos + len end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos], len) str := string(bytepile[start_pos..end_pos], len)
aaa ^= wyhash.sum64_string(str, 1) checksum ^= wyhash.wyhash_c(&str.str, u64(str.len), 1)
start_pos = end_pos start_pos = end_pos
} }
println('aaa: $aaa') bhashing_1.measure('wyhash.wyhash_c | checksum: ${checksum:22}')
t2 := time.ticks() mut bhashing_2 := benchmark.start()
d2 := t2 - t1
println(' * wyhash4: ${d2}ms')
start_pos = 0 start_pos = 0
aaa = 0 checksum = 0
for len in str_lens { for len in str_lens {
end_pos := start_pos + len end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos], len) str := string(bytepile[start_pos..end_pos], len)
aaa ^= fnv1a.sum64_string(str) checksum ^= wyhash.sum64_string(str, 1)
start_pos = end_pos start_pos = end_pos
} }
println('aaa: $aaa') bhashing_2.measure('wyhash.sum64_string | checksum: ${checksum:22}')
t3 := time.ticks() mut bhashing_3 := benchmark.start()
d3 := t3 - t2 start_pos = 0
println(' * fnv1a64: ${d3}ms') checksum = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos], len)
checksum ^= fnv1a.sum64_string(str)
start_pos = end_pos
}
bhashing_3.measure('fnv1a.sum64_string | checksum: ${checksum:22}')
} }