then, a priority message queue is designed, and weighted fair queuing ( wfq ) algorithm is used for messages queuing 其次,設(shè)計(jì)了可靠的消息隊(duì)列,并采用平均加權(quán)算法對(duì)消息進(jìn)行排隊(duì),支持優(yōu)先級(jí)機(jī)制。
weighted fair queuing ( wfq ), on the other hand, allows allocation of bandwidth on a variable basis, so not all flows have to have the same bandwidth allocation 另一方面,加權(quán)公平排隊(duì)(wfq)允許在可變的基礎(chǔ)上分配帶寬,因而不是所有的信息流都必須有相同的帶寬分配。
3 . resource management algorithm of guarantee qos routing is given, which has proposed a new algorithm with gloal minimum jitter under the weighted fair queue 給出了保證qos路由算法的網(wǎng)絡(luò)資源管理算法,并重點(diǎn)給出了在加權(quán)公平意義下的隊(duì)列的數(shù)據(jù)傳輸?shù)娜侄秳?dòng)最小算法。
,: after review fair queuing algorithms, the chapter 5 places emphasis on wfq ( weighted fair queuing ) performance analysis and concludes that wfq has certain capability of resisting h 第五章首先介紹了幾種公平排隊(duì)算法,重點(diǎn)分析了wfq的性能,得出了wfq具有一定的抗高等級(jí)突發(fā)的能力,該能力和業(yè)務(wù)的突發(fā)程度、系統(tǒng)負(fù)荷和各等級(jí)的權(quán)值分配有關(guān)。
after that, qos management methods are introduced, including packet classification, congestion control and buffer queue management . several queuing principles are compared such as fifo queuing, prioritized queuing and weighted fair queuing . tail drop and active queue management are also introduced in this part 同時(shí)對(duì)epon系統(tǒng)采用的qos管理策略做了詳細(xì)的闡述,分析了報(bào)文分類方法、擁塞管理策略、緩沖隊(duì)列管理策略,對(duì)比了fifo隊(duì)列、pq隊(duì)列和wfq隊(duì)列等幾種主要的隊(duì)列特點(diǎn),以及尾丟棄和主動(dòng)隊(duì)列管理aqm的區(qū)別。