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
|
package integration_tests
import (
"fmt"
"io"
"io/ioutil"
"os"
"testing"
)
func BenchmarkStreamWrite(t *testing.B) {
buf := make([]byte, 1024*1024)
t.SetBytes(int64(len(buf)))
file, err := os.Create(plainDir + "BenchmarkWrite")
if err != nil {
t.FailNow()
}
t.ResetTimer()
var i int
for i = 0; i < t.N; i++ {
written, err := file.Write(buf)
if err != nil {
fmt.Printf("err=\"%s\", written=%d\n", err.Error(), written)
t.FailNow()
}
}
file.Close()
}
func BenchmarkStreamRead(t *testing.B) {
buf := make([]byte, 1024*1024)
t.SetBytes(int64(len(buf)))
fn := plainDir + "BenchmarkWrite"
fi, err := os.Stat(fn)
if err != nil {
t.Fatal(err)
}
mb := int(fi.Size() / 1024 / 1024)
if t.N > mb {
// Grow file so we can satisfy the test
//fmt.Printf("Growing file to %d MB... ", t.N)
f2, err := os.OpenFile(fn, os.O_WRONLY|os.O_APPEND, 0666)
if err != nil {
fmt.Println(err)
t.FailNow()
}
for h := 0; h < t.N-mb; h++ {
_, err = f2.Write(buf)
if err != nil {
fmt.Println(err)
t.FailNow()
}
}
f2.Close()
//fmt.Printf("done\n")
}
file, err := os.Open(fn)
if err != nil {
t.FailNow()
}
t.ResetTimer()
var i int
for i = 0; i < t.N; i++ {
_, err := file.Read(buf)
if err == io.EOF {
fmt.Printf("Test file too small\n")
t.SkipNow()
} else if err != nil {
fmt.Println(err)
t.FailNow()
}
}
file.Close()
}
// createFiles - create "count" files of size "size" bytes each
func createFiles(t *testing.B, count int, size int) {
dir := fmt.Sprintf("%s/createFiles_%d_%d", plainDir, count, size)
err := os.Mkdir(dir, 0777)
if err != nil {
t.Fatal(err)
}
buf := make([]byte, size)
t.SetBytes(int64(len(buf)))
t.ResetTimer()
var i int
for i = 0; i < count; i++ {
file := fmt.Sprintf("%s/%d", dir, i)
if size > 0 {
err = ioutil.WriteFile(file, buf, 0666)
} else {
var fh *os.File
fh, err = os.Create(file)
fh.Close()
}
if err != nil {
t.Fatal(err)
}
}
t.StopTimer()
os.RemoveAll(dir)
}
func BenchmarkCreate0B(t *testing.B) {
createFiles(t, t.N, 0)
}
func BenchmarkCreate1B(t *testing.B) {
createFiles(t, t.N, 1)
}
func BenchmarkCreate100B(t *testing.B) {
createFiles(t, t.N, 100)
}
func BenchmarkCreate4kB(t *testing.B) {
createFiles(t, t.N, 4*1024)
}
func BenchmarkCreate10kB(t *testing.B) {
createFiles(t, t.N, 10*1024)
}
|
