Spaces:
Running
Running
File size: 4,583 Bytes
b110593 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 |
// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package inverted
import (
"math"
"math/rand"
"sort"
"testing"
)
// func BenchmarkAnd10k1m_Old(b *testing.B) {
// b.StopTimer()
// list1 := propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(1e4),
// checksum: []byte{0x01},
// },
// operator: filters.OperatorEqual,
// }
// list2 := propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(1e6),
// checksum: []byte{0x02},
// },
// operator: filters.OperatorEqual,
// }
// b.StartTimer()
// for i := 0; i < b.N; i++ {
// mergeAnd([]*propValuePair{&list1, &list2}, false)
// }
// }
// func BenchmarkAnd10k1m_Optimized(b *testing.B) {
// b.StopTimer()
// list1 := propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(1e4),
// checksum: []byte{0x01},
// },
// operator: filters.OperatorEqual,
// }
// list2 := propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(1e6),
// checksum: []byte{0x02},
// },
// operator: filters.OperatorEqual,
// }
// b.StartTimer()
// for i := 0; i < b.N; i++ {
// mergeAndOptimized([]*propValuePair{&list1, &list2}, false)
// }
// }
// func BenchmarkMultipleListsOf20k_Old(b *testing.B) {
// b.StopTimer()
// lists := make([]*propValuePair, 10)
// for i := range lists {
// lists[i] = &propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(2e4),
// checksum: []byte{uint8(i)},
// },
// operator: filters.OperatorEqual,
// }
// }
// b.StartTimer()
// for i := 0; i < b.N; i++ {
// mergeAnd(lists, false)
// }
// }
// func BenchmarkMultipleListsOf20k_Optimized(b *testing.B) {
// b.StopTimer()
// lists := make([]*propValuePair, 10)
// for i := range lists {
// lists[i] = &propValuePair{
// docIDs: docPointers{
// docIDs: randomIDs(2e4),
// checksum: []byte{uint8(i)},
// },
// operator: filters.OperatorEqual,
// }
// }
// b.StartTimer()
// for i := 0; i < b.N; i++ {
// mergeAndOptimized(lists, false)
// }
// }
func BenchmarkSort10k(b *testing.B) {
for i := 0; i < b.N; i++ {
b.StopTimer()
list := randomIDs(1e4)
b.StartTimer()
sort.Slice(list, func(a, b int) bool {
return list[a] < list[b]
})
}
}
func BenchmarkUnsortedLinearSearch(b *testing.B) {
searchTargets := randomIDs(1e5)
for i := 0; i < b.N; i++ {
b.StopTimer()
list := randomIDs(1e5)
b.StartTimer()
for i := range searchTargets {
linearSearchUnsorted(list, searchTargets[i])
}
}
}
func BenchmarkSortedBinarySearch(b *testing.B) {
searchTargets := randomIDs(1e6)
for i := 0; i < b.N; i++ {
b.StopTimer()
list := randomIDs(1e4)
b.StartTimer()
sort.Slice(list, func(a, b int) bool {
return list[a] < list[b]
})
for i := range searchTargets {
binarySearch(list, searchTargets[i])
}
}
}
func BenchmarkHashmap(b *testing.B) {
searchTargets := randomIDs(1e6)
for i := 0; i < b.N; i++ {
b.StopTimer()
list := randomIDs(1e4)
b.StartTimer()
lookup := make(map[uint64]struct{}, len(list))
for i := range list {
lookup[list[i]] = struct{}{}
}
for i := range searchTargets {
_, ok := lookup[searchTargets[i]]
_ = ok
}
}
}
func randomIDs(count int) []uint64 {
out := make([]uint64, count)
for i := range out {
out[i] = rand.Uint64()
}
return out
}
func linearSearchUnsorted(in []uint64, needle uint64) bool {
for i := range in {
if in[i] == needle {
return true
}
}
return false
}
// function binary_search(A, n, T) is
// L := 0
// R := n − 1
// while L ≤ R do
// m := floor((L + R) / 2)
// if A[m] < T then
// L := m + 1
// else if A[m] > T then
// R := m − 1
// else:
// return m
// return unsuccessful
func binarySearch(in []uint64, needle uint64) bool {
left := 0
right := len(in) - 1
for left <= right {
m := int(math.Floor(float64((left + right)) / float64(2)))
if in[m] < needle {
left = m + 1
} else if in[m] > needle {
right = m - 1
} else {
return true
}
}
return false
}
|