SPAND: shared passive network performance discovery

摘要: In the Internet today, users and applications must often make decisions based on performance they expect to receive from other hosts. For example, can view many Web pages in low-bandwidth or high-bandwidth versions, while present with long lists of mirror sites chose from. Current techniques perform these are ad hoc poorly designed. The most common solution used today is require user manually their own experience whatever information provided by application. Previous efforts automate this decision-making process have relied isolated, active network probes a host. Unfortunately, method making measurements has several problems. Active probing introduces unnecessary traffic that quickly become significant part total handled busy servers. Probing single host results less accurate more redundant than system shares nearby paper, we propose called SPAND (Shared Passive Network Performance Discovery) determines characteristics shared, passive collection show why using hosts advantages over We also sharing significantly increase accuracy timeliness predictions. addition, initial prototype design SPAND, current implementation status our system, potential benefits SPAND.