diff --git a/benchmarks/mem_test.go b/benchmarks/mem_test.go
deleted file mode 100644
index 3309e1dbc..000000000
--- a/benchmarks/mem_test.go
+++ /dev/null
@@ -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
-}