diff --git a/internal/caches/list_file_db.go b/internal/caches/list_file_db.go
index ddc7a3b..64d050c 100644
--- a/internal/caches/list_file_db.go
+++ b/internal/caches/list_file_db.go
@@ -68,7 +68,7 @@ func (this *FileListDB) Open(dbPath string) error {
 	var cacheSize = 512
 	var memoryGB = utils.SystemMemoryGB()
 	if memoryGB >= 1 {
-		cacheSize = 128 * memoryGB
+		cacheSize = 256 * memoryGB
 	}
 
 	// write db
diff --git a/internal/caches/list_file_db_test.go b/internal/caches/list_file_db_test.go
index af19ef7..e615c8d 100644
--- a/internal/caches/list_file_db_test.go
+++ b/internal/caches/list_file_db_test.go
@@ -116,7 +116,7 @@ func TestFileListDB_Memory(t *testing.T) {
 		_ = db.Close()
 	}()
 
-	err := db.Open(Tea.Root + "/data/db-0.db")
+	err := db.Open(Tea.Root + "/data/cache-index/p1/db-0.db")
 	if err != nil {
 		t.Fatal(err)
 	}