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
|
package fastcache
import (
"fmt"
"os"
"sync"
"testing"
)
func BenchmarkSaveToFile(b *testing.B) {
for _, concurrency := range []int{1, 2, 4, 8, 16} {
b.Run(fmt.Sprintf("concurrency_%d", concurrency), func(b *testing.B) {
benchmarkSaveToFile(b, concurrency)
})
}
}
func benchmarkSaveToFile(b *testing.B, concurrency int) {
filePath := fmt.Sprintf("BencharkSaveToFile.%d.fastcache", concurrency)
defer os.RemoveAll(filePath)
c := newBenchCache()
b.ReportAllocs()
b.ResetTimer()
b.SetBytes(benchCacheSize)
for i := 0; i < b.N; i++ {
if err := c.SaveToFileConcurrent(filePath, concurrency); err != nil {
b.Fatalf("unexpected error when saving to file: %s", err)
}
}
}
func BenchmarkLoadFromFile(b *testing.B) {
for _, concurrency := range []int{1, 2, 4, 8, 16} {
b.Run(fmt.Sprintf("concurrency_%d", concurrency), func(b *testing.B) {
benchmarkLoadFromFile(b, concurrency)
})
}
}
func benchmarkLoadFromFile(b *testing.B, concurrency int) {
filePath := fmt.Sprintf("BenchmarkLoadFromFile.%d.fastcache", concurrency)
defer os.RemoveAll(filePath)
c := newBenchCache()
if err := c.SaveToFileConcurrent(filePath, concurrency); err != nil {
b.Fatalf("cannot save cache to file: %s", err)
}
b.ReportAllocs()
b.ResetTimer()
b.SetBytes(benchCacheSize)
for i := 0; i < b.N; i++ {
c, err := LoadFromFile(filePath)
if err != nil {
b.Fatalf("cannot load cache from file: %s", err)
}
var s Stats
c.UpdateStats(&s)
if s.EntriesCount == 0 {
b.Fatalf("unexpected zero entries")
}
}
}
var (
benchCache *Cache
benchCacheOnce sync.Once
)
func newBenchCache() *Cache {
benchCacheOnce.Do(func() {
c := New(benchCacheSize)
itemsCount := benchCacheSize / 20
for i := 0; i < itemsCount; i++ {
k := []byte(fmt.Sprintf("key %d", i))
v := []byte(fmt.Sprintf("value %d", i))
c.Set(k, v)
}
benchCache = c
})
return benchCache
}
const benchCacheSize = bucketsCount * chunkSize
|
