diff --git a/services/backup_sa/src/module_ipc/svc_session_manager.cpp b/services/backup_sa/src/module_ipc/svc_session_manager.cpp
index c2246fe4732cc3b274c314873e16ad9a3ba95d00..892f1398a32996c50e44c050e1d54af317ce8356 100644
--- a/services/backup_sa/src/module_ipc/svc_session_manager.cpp
+++ b/services/backup_sa/src/module_ipc/svc_session_manager.cpp
@@ -580,7 +580,7 @@ uint32_t SvcSessionManager::CalAppProcessTime(const std::string &bundleName)
 
     try {
         stat = StorageMgrAdapter::GetBundleStats(bundleName);
-        appSize = (stat.appSize_ + stat.cacheSize_ + stat.dataSize_);
+        appSize = (stat.appSize_ + stat.dataSize_);
         /* % UINT_MAX force conver uint64 to uint32 */
         /* timeout = (AppSize / 3Ms) * 3 + 30 */
         timeout = (uint32_t)(defaultTimeout + (appSize / processRate) * multiple % UINT_MAX);