diff --git a/internal/caches/list_file_db.go b/internal/caches/list_file_db.go
index d796d42..ddc7a3b 100644
--- a/internal/caches/list_file_db.go
+++ b/internal/caches/list_file_db.go
@@ -65,10 +65,10 @@ func (this *FileListDB) Open(dbPath string) error {
 	this.dbPath = dbPath
 
 	// 动态调整Cache值
-	var cacheSize = 32000
+	var cacheSize = 512
 	var memoryGB = utils.SystemMemoryGB()
-	if memoryGB >= 8 {
-		cacheSize += 32000 * memoryGB / 8
+	if memoryGB >= 1 {
+		cacheSize = 128 * memoryGB
 	}
 
 	// write db
diff --git a/internal/caches/list_file_db_test.go b/internal/caches/list_file_db_test.go
index 868579e..af19ef7 100644
--- a/internal/caches/list_file_db_test.go
+++ b/internal/caches/list_file_db_test.go
@@ -4,12 +4,20 @@ package caches_test
 
 import (
 	"github.com/TeaOSLab/EdgeNode/internal/caches"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/testutils"
 	"github.com/iwind/TeaGo/Tea"
 	_ "github.com/iwind/TeaGo/bootstrap"
+	"runtime"
+	"runtime/debug"
 	"testing"
+	"time"
 )
 
 func TestFileListDB_ListLFUItems(t *testing.T) {
+	if !testutils.IsSingleTesting() {
+		return
+	}
+
 	var db = caches.NewFileListDB()
 
 	defer func() {
@@ -34,6 +42,10 @@ func TestFileListDB_ListLFUItems(t *testing.T) {
 }
 
 func TestFileListDB_CleanMatchKey(t *testing.T) {
+	if !testutils.IsSingleTesting() {
+		return
+	}
+
 	var db = caches.NewFileListDB()
 
 	defer func() {
@@ -62,6 +74,10 @@ func TestFileListDB_CleanMatchKey(t *testing.T) {
 }
 
 func TestFileListDB_CleanMatchPrefix(t *testing.T) {
+	if !testutils.IsSingleTesting() {
+		return
+	}
+
 	var db = caches.NewFileListDB()
 
 	defer func() {
@@ -88,3 +104,67 @@ func TestFileListDB_CleanMatchPrefix(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func TestFileListDB_Memory(t *testing.T) {
+	if !testutils.IsSingleTesting() {
+		return
+	}
+
+	var db = caches.NewFileListDB()
+
+	defer func() {
+		_ = db.Close()
+	}()
+
+	err := db.Open(Tea.Root + "/data/db-0.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Init()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(db.Total())
+
+	// load hashes
+	var maxId int64
+	var hashList []string
+	var before = time.Now()
+	for i := 0; i < 1_000; i++ {
+		hashList, maxId, err = db.ListHashes(maxId)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if len(hashList) == 0 {
+			t.Log("hashes loaded", time.Since(before).Seconds()*1000, "ms")
+			break
+		}
+		if i%100 == 0 {
+			t.Log(i)
+		}
+	}
+
+	runtime.GC()
+	debug.FreeOSMemory()
+
+	//time.Sleep(600 * time.Second)
+
+	for i := 0; i < 1_000; i++ {
+		_, err = db.ListLFUItems(5000)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if i%100 == 0 {
+			t.Log(i)
+		}
+	}
+
+	t.Log("loaded")
+
+	runtime.GC()
+	debug.FreeOSMemory()
+
+	time.Sleep(600 * time.Second)
+}