diff --git a/raw_memory_test.go b/raw_memory_test.go
index 3275ec0..98a1128 100644
--- a/raw_memory_test.go
+++ b/raw_memory_test.go
@@ -84,8 +84,8 @@ func Test_Syscall6(t *testing.T) {
 }
 
 func Test_LineAlloc(t *testing.T) {
-	userSize, num := unsafe.Sizeof(User{}), 1000000000
-	fmt.Println(heapRawMemoryBytes*8, unsafe.Sizeof(User{})*1000000000)
+	userSize, num := unsafe.Sizeof(User{}), 10000
+	fmt.Println(heapRawMemoryBytes*8, unsafe.Sizeof(User{})*uintptr(num))
 	size := int(round(uintptr(heapRawMemoryBytes*8), 4096))
 	addr := uintptr(sysReserve(size)) // 必须预留的多才可以   	arena linearAlloc学习这个
 	prot, flags, fd, offset, length := syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_ANON|syscall.MAP_FIXED|syscall.MAP_PRIVATE, -1, 0, size
diff --git a/span_pool_test.go b/span_pool_test.go
index 474c7fe..ed4f1e3 100644
--- a/span_pool_test.go
+++ b/span_pool_test.go
@@ -88,7 +88,7 @@ func TestSpanLock(t *testing.T) {
 
 func Test_SanPool_Alloc(t *testing.T) {
 	f := &Factory{}
-	mm, err := f.CreateConcurrentHashMapMemory(0.6, 1)
+	mm, err := f.CreateMemory(0.6)
 	if err != nil {
 		panic(err)
 	}
diff --git a/xmm.go b/xmm.go
index 67fa261..992557d 100644
--- a/xmm.go
+++ b/xmm.go
@@ -142,6 +142,7 @@ type Factory struct {
 	sp *xSpanPool
 }
 
+// CreateMemory spanFact为负载因子，当span内存超过这个百分比阈值，就会扩容
 func (s *Factory) CreateMemory(spanFact float32) (XMemory, error) {
 	if spanFact <= 0 {
 		return nil, NilError
@@ -159,24 +160,6 @@ func (s *Factory) CreateMemory(spanFact float32) (XMemory, error) {
 	return &mm{sp: sp, sa: sa, h: h}, nil
 }
 
-//NewXConcurrentHashMapSpanPool
-func (s *Factory) CreateConcurrentHashMapMemory(spanFact float32, pageNumCoefficient uint8) (XMemory, error) {
-	if spanFact <= 0 {
-		return nil, NilError
-	}
-	h, err := newXHeap()
-	if err != nil {
-		return nil, err
-	}
-	sp, err := newXConcurrentHashMapSpanPool(h, spanFact, pageNumCoefficient)
-	if err != nil {
-		return nil, err
-	}
-	sa := newXStringAllocator(sp)
-	s.sp = sp
-	return &mm{sp: sp, sa: sa, h: h}, nil
-}
-
 func (s *Factory) PrintStatus() {
 	for index, u := range s.sp.inuse {
 		if u < 100 {
diff --git a/xmm_test.go b/xmm_test.go
index f01e6b6..42dd323 100644
--- a/xmm_test.go
+++ b/xmm_test.go
@@ -404,7 +404,7 @@ func Test_NewUser(t *testing.T) {
 
 func Test_FromInAddr(t *testing.T) {
 	f := &Factory{}
-	mm, err := f.CreateConcurrentHashMapMemory(0.6, 1)
+	mm, err := f.CreateMemory(0.6)
 	if err != nil {
 		t.Fatal(err)
 	}