隨著硬體成本的不斷下降，智慧型手機逐漸的普及在我們的生活中，智慧型手機所使用的作業系統也百花齊放，其中又以Android 推動的裝置佔了絕大多數，在當前Android的系統架構設計下，所有Android Framework中應用程式與應用程式間，應用程式與系統服務間，系統服務與系統服務間的IPC ( Inter Process Communication ) [1] 皆是以Open Binder[2]架構為核心設計的Binder Framework運作，此一行為在系統中所佔角色之重要，與其他作業系統迥然不同。本研究基於Binder Framework的運作具有區域性(Locality)特性的假設，實作以伸展樹(Splay-Tree)[3]演算法為主軸的Binder Driver，取代原本紅黑樹(Red-Black Tree)[4]的架構，去驗證是否能改善Binder Framework運作的效能。實驗結果顯示出，Android系統本身的基本System Service便具有相當的區域性，如在特定的使用習慣環境下，以Splay-Tree實作的Binder Driver，改善的幅度更顯著．以目前Android裝置的普及化，若能將此一架構的改變推廣，當可節省巨量的運算能量。 Smart Phones, powered by miscellaneous mobile operating systems, is getting common in our lives. This trend comes with descending of hardware cost. Most of Smart Phone devices are powered by Google Android today. In Android architecture design. The importance of IPC (Inter Process Communication)[1] takes a significant role than any other modern mobile operating system. All IPCs , including application/application, application/system service, system service/system service, happens in Android-Framework are based Binder Framework, which is a descendant of Open Binder[2]. Our assumption is that Binder Framework has locality. If replacing the Red-Black Tree[4] based node managing system by Splay-Tree[3]. The performance should be better. This papper evaluates that the performance of connectivity of IPC node generated by Android System Service has been improved. Consider the popularity of Android devices today. It may save huge amount of computing resources.
