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Remove broken mmm benchmark that doesn't belong

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This commit is contained in:
Jae Kwon 2015-12-31 14:30:50 -08:00
parent dcc1caaf68
commit 0e7b069cd8
1 changed files with 0 additions and 143 deletions
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143
benchmarks/mem_test.go
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@ -1,143 +0,0 @@
package mmm
import (
"bufio"
"os"
"syscall"
"testing"
"unsafe"
. "github.com/tendermint/go-common"
)
func BenchmarkMmapCopyMmap(b *testing.B) {
b.StopTimer()
size := 1 << (10 * 3)
bytes1, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
bytes2, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
b.StartTimer()
for j := 0; j < b.N; j++ {
for i := 0; i < size; i++ {
bytes2[i] = bytes1[i]
}
}
}
func BenchmarkMmapCopyFile128Buf(b *testing.B) {
b.StopTimer()
size := 1 << (10 * 3)
bytes1, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
file, err := os.OpenFile(Fmt("temp-%v", RandStr(4)), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
if err != nil {
b.Error(err)
return
}
buf := bufio.NewWriter(file)
b.StartTimer()
for j := 0; j < b.N; j++ {
for i := 0; i < size; i += 128 {
buf.Write(bytes1[i : i+128])
}
buf.Flush()
}
}
func BenchmarkMmapCopyFile1024Buf(b *testing.B) {
b.StopTimer()
size := 1 << (10 * 3)
bytes1, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
file, err := os.OpenFile(Fmt("temp-%v", RandStr(4)), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
if err != nil {
b.Error(err)
return
}
buf := bufio.NewWriter(file)
b.StartTimer()
for j := 0; j < b.N; j++ {
for i := 0; i < size; i += 1024 {
buf.Write(bytes1[i : i+1024])
}
buf.Flush()
}
}
func BenchmarkMmapCopyFile4096(b *testing.B) {
b.StopTimer()
size := 1 << (10 * 3)
bytes1, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
file, err := os.OpenFile(Fmt("temp-%v", RandStr(4)), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
if err != nil {
b.Error(err)
return
}
b.StartTimer()
for j := 0; j < b.N; j++ {
for i := 0; i < size; i += 4096 {
file.Write(bytes1[i : i+4096])
}
}
}
// Commented out, this is slower, and unsafe.
func _BenchmarkMmapCopyMmap64(b *testing.B) {
b.StopTimer()
size := 1 << (10 * 3)
bytes1, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
bytes2, err := makeMmap(b, size)
if err != nil {
b.Error(err)
return
}
bytes1_64 := *(*[]uint64)(unsafe.Pointer(&bytes1))
bytes2_64 := *(*[]uint64)(unsafe.Pointer(&bytes2))
b.StartTimer()
for j := 0; j < b.N; j++ {
for i := 0; i < size/8; i++ {
bytes2_64[i] = bytes1_64[i]
}
}
}
func makeMmap(b *testing.B, size int) ([]byte, error) {
b.Log("Setting up v mmap region, size:", size)
bytes1, err := syscall.Mmap(
0, 0, size,
syscall.PROT_READ|syscall.PROT_WRITE,
mmapFlags,
)
b.Log("Initializing region")
for i := 0; i < size; i++ {
bytes1[i] = byte((i + 13) % 256)
}
b.Log("Done")
return bytes1, err
}