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performance_test.go
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performance_test.go
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package skiplist
import (
"fmt"
"math/rand"
"sync"
"testing"
"time"
"unsafe"
)
type List struct {
list map[string]bool
mx *sync.RWMutex
}
var keys [][]byte
var keysString []string
var list *Skiplist
var list1 map[string]bool
var list2 *List
const defaultKeys = 100000
func init() {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
//初始化10000000个keys
keys = make([][]byte, 0, defaultKeys)
keysString = make([]string, 0, defaultKeys)
for i := 0; i < defaultKeys; i++ {
//随机生成key
var length = r.Intn(1000)
var buff []byte
for j := 0; j < length; j++ {
buff = make([]byte, 0, length)
buff = append(buff, byte(r.Uint32()))
}
keys = append(keys, buff)
keysString = append(keysString, string(buff))
}
list = NewSkiplist(32)
list1 = make(map[string]bool)
list2 = &List{
list: make(map[string]bool),
mx: &sync.RWMutex{},
}
fmt.Println("init success")
}
//单线程
func BenchmarkSkiplistPut(b *testing.B) {
for i := 0; i < b.N; i++ {
var key = keys[i%defaultKeys]
var value = 111
list.Put(key, unsafe.Pointer(&value))
}
}
func BenchmarkMapPut(b *testing.B) {
for i := 0; i < b.N; i++ {
var key = keysString[i%defaultKeys]
list1[key] = true
}
}
func BenchmarkLockMapPut(b *testing.B) {
for i := 0; i < b.N; i++ {
var key = keysString[i%defaultKeys]
list2.mx.Lock()
list2.list[key] = true
list2.mx.Unlock()
}
}
var threads = 1000
//多线程
func TestSkiplistPut(t *testing.T) {
var wg = &sync.WaitGroup{}
wg.Add(threads * 100000)
var start = time.Now()
for i := 0; i < threads; i++ {
go func() {
for j := 0; j < 100000; j++ {
var key = keys[j%defaultKeys]
var value = true
list.Put(key, unsafe.Pointer(&value))
wg.Done()
}
}()
}
wg.Wait()
t.Logf("time: %f", time.Since(start).Seconds())
}
func TestLockMapPut(t *testing.T) {
var wg = &sync.WaitGroup{}
wg.Add(threads * 100000)
var start = time.Now()
for i := 0; i < threads; i++ {
go func() {
for j := 0; j < 100000; j++ {
var key = keysString[j%defaultKeys]
list2.mx.Lock()
list2.list[key] = true
list2.mx.Unlock()
wg.Done()
}
}()
}
wg.Wait()
t.Logf("time: %f", time.Since(start).Seconds())
}
func TestSkiplistGet(t *testing.T) {
var wg = &sync.WaitGroup{}
wg.Add(threads * 100000)
var start = time.Now()
for i := 0; i < threads; i++ {
go func() {
for j := 0; j < 100000; j++ {
var key = keys[j%defaultKeys]
list.Get(key)
wg.Done()
}
}()
}
wg.Wait()
t.Logf("time: %f", time.Since(start).Seconds())
}
func TestLockMapGet(t *testing.T) {
var wg = &sync.WaitGroup{}
wg.Add(threads * 100000)
var start = time.Now()
for i := 0; i < threads; i++ {
go func() {
for j := 0; j < 100000; j++ {
var key = keysString[j%defaultKeys]
list2.mx.RLock()
_ = list2.list[key]
list2.mx.RUnlock()
wg.Done()
}
}()
}
wg.Wait()
t.Logf("time: %f", time.Since(start).Seconds())
}