queue n. 1.发辫,辫子。 2.〔英国〕(顺序等车、购物的)行列,长队;车队。 form a queue 排队。 in a queue 排成一行。 jump the queue 不按次序排队;企图获得优惠待遇。 vt. 把(头发)梳成辫子。 vi. 〔英国〕排(成)队,排队等候 (on; up)。 queue up at a bus stop 在公共汽车站排队。
overflow vt. (-flowed, -flown; -flowing) 使溢出,使泛滥,使涨满;淹没;人满得走不进(房间等)。 The river overflowed its banks. 河水漫出堤岸。 The river overflowed several farms. 河水淹没了几个农场。 The goods overflowed the warehouse. 货物多得仓库堆不下了。 vi. 溢流,泛滥,漫出;满,充满;洋溢;(资源等)过剩。 a man overflowing with sympathy 充满同情心的人。 a land overflowing with resources of every kind 各种资源都很丰富的国家。 overflow with 充溢,充满。 n. 1.泛滥,溢流。 2.外溢,充溢,过多,过剩;超出额;溢出物。 3.溢洪道,排水口。 an overflow gate 溢水口。 an overflow of population 人口过剩。 adj. 溢出的;充满的(=overflowing)。
The essence of aqm is to detect the incipient congestion before queue overflow . when congestion has been detected , packets would be dropped or be marked ( ecn ) with a probability to send congestion notification to the sources Aqm的本质就是在队列溢出之前检测出早期的拥塞,并且以一定的概率丢弃或者标记( ecn )数据包,从而向源端发出拥塞指示,以缓解网络拥塞。
When congestion occurs , red randomly select sources to notify congestion before queue overflow and once tcp sources receive the notification it will reduce the congestion window to decrease the packet sending rate , and therefore , mitigate the network congestion Red的基本思想是路由器通过监控队列的平均长度来探测拥塞。一旦发现拥塞逼近,就随机地选择源端来通知拥塞,使他们在队列溢出导致丢包之前减小拥塞窗口,降低发送数据速度。
Because internet is based on the bandwidth statistical multiplexing principle so there are lots of active flows competing limited bandwidth resource in a link . when network congestion occurs aqm must send congestion notification to adequate sources to reduce the traffic load and avoid queue overflow 由于互联网是基于带宽统计复用的,一条链路上有很多活跃流( activeflows )在竞争有限的带宽资源,因此,进行拥塞通知时应充分考虑到瓶颈链路上流的数量,而red算法并没有考虑到这一点。