diff --git a/go.mod b/go.mod
index 458cd2e..4aff959 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.18
 replace (
 	github.com/TeaOSLab/EdgeCommon => ../EdgeCommon
 	github.com/fsnotify/fsnotify => github.com/iwind/fsnotify v1.5.2-0.20220817040843-193be2051ff4
+	rogchap.com/v8go => /Users/Workspace/Projects/v8go
 )
 
 require (
diff --git a/internal/caches/storage_file.go b/internal/caches/storage_file.go
index ae4a8cb..60dc9d9 100644
--- a/internal/caches/storage_file.go
+++ b/internal/caches/storage_file.go
@@ -954,7 +954,7 @@ func (this *FileStorage) purgeLoop() {
 	this.checkDiskSpace()
 
 	// 计算是否应该开启LFU清理
-	var capacityBytes = this.policy.CapacityBytes()
+	var capacityBytes = this.diskCapacityBytes()
 	var startLFU = false
 	var lfuFreePercent = this.policy.PersistenceLFUFreePercent
 	if lfuFreePercent <= 0 {