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Add packetcache benchmarks.

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This commit is contained in:
Juliusz Chroboczek 2020-06-03 02:09:22 +02:00
parent 4d2bd6e473
commit d723d20ee6
1 changed files with 106 additions and 7 deletions
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113
packetcache/packetcache_test.go
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@ -3,6 +3,7 @@ package packetcache
import (
"bytes"
"math/rand"
"sync"
"testing"
"unsafe"
@ -85,8 +86,8 @@ func TestCacheAlignment(t *testing.T) {
cache := New(16)
for i := range cache.entries {
p := unsafe.Pointer(&cache.entries[i])
if uintptr(p) % 32 != 0 {
t.Errorf("%v: alignment %v", i, uintptr(p) % 32)
if uintptr(p)%32 != 0 {
t.Errorf("%v: alignment %v", i, uintptr(p)%32)
}
}
}
@ -100,7 +101,7 @@ func TestBitmap(t *testing.T) {
var first uint16
for i := 0; i < 64; i++ {
if (value & (1 << i)) != 0 {
first, _ = cache.Store(uint16(42 + i), packet)
first, _ = cache.Store(uint16(42+i), packet)
}
}
@ -122,7 +123,7 @@ func TestBitmapWrap(t *testing.T) {
var first uint16
for i := 0; i < 64; i++ {
if (value & (1 << i)) != 0 {
first, _ = cache.Store(uint16(42 + i), packet)
first, _ = cache.Store(uint16(42+i), packet)
}
}
@ -140,7 +141,7 @@ func TestBitmapGet(t *testing.T) {
for i := 0; i < 64; i++ {
if (value & (1 << i)) != 0 {
cache.Store(uint16(42 + i), packet)
cache.Store(uint16(42+i), packet)
}
}
@ -161,7 +162,7 @@ func TestBitmapGet(t *testing.T) {
value >>= 1
pos += 1
for bitmap != 0 {
if uint8(bitmap & 1) == uint8(value & 1) {
if uint8(bitmap&1) == uint8(value&1) {
t.Errorf("Bitmap mismatch")
}
bitmap >>= 1
@ -182,7 +183,7 @@ func TestBitmapPacket(t *testing.T) {
for i := 0; i < 64; i++ {
if (value & (1 << i)) != 0 {
cache.Store(uint16(42 + i), packet)
cache.Store(uint16(42+i), packet)
}
}
@ -203,3 +204,101 @@ func TestBitmapPacket(t *testing.T) {
}
}
}
func BenchmarkCachePutGet(b *testing.B) {
n := 10
chans := make([]chan uint16, n)
for i := range chans {
chans[i] = make(chan uint16, 8)
}
cache := New(96)
var wg sync.WaitGroup
wg.Add(len(chans))
for i := range chans {
go func(ch <-chan uint16) {
defer wg.Done()
buf := make([]byte, BufSize)
for {
seqno, ok := <-ch
if !ok {
return
}
l := cache.Get(seqno, buf)
if l == 0 {
b.Errorf("Couldn't get %v", seqno)
}
}
}(chans[i])
}
buf := make([]byte, 1200)
b.SetBytes(1200)
b.ResetTimer()
for i := 0; i < b.N; i++ {
seqno := uint16(i)
cache.Store(seqno, buf)
for _, ch := range chans {
ch <- seqno
}
}
for _, ch := range chans {
close(ch)
}
wg.Wait()
}
type is struct {
index, seqno uint16
}
func BenchmarkCachePutGetAt(b *testing.B) {
n := 10
chans := make([]chan is, n)
for i := range chans {
chans[i] = make(chan is, 8)
}
cache := New(96)
var wg sync.WaitGroup
wg.Add(len(chans))
for i := range chans {
go func(ch <-chan is) {
defer wg.Done()
buf := make([]byte, BufSize)
for {
is, ok := <-ch
if !ok {
return
}
l := cache.GetAt(is.seqno, is.index, buf)
if l == 0 {
b.Errorf("Couldn't get %v", is)
}
}
}(chans[i])
}
buf := make([]byte, 1200)
b.SetBytes(1200)
b.ResetTimer()
for i := 0; i < b.N; i++ {
seqno := uint16(i)
_, index := cache.Store(seqno, buf)
for _, ch := range chans {
ch <- is{index, seqno}
}
}
for _, ch := range chans {
close(ch)
}
wg.Wait()
}