Except the Lamport,RA and N~(0.63) algorithm,all the other distributed mutual exclusion algorithms brought forward formerly are fair only when the number of the system sites is peculiarly related on the sites number of the quorum.

• 除Lamport算法；ra算法和N0.；63算法外；以前提出的分布式互斥算法都只是在节点数目与请求集大小存在一定关系时才是公平和对称的；在大多数情况下是不对称的