Is WFQ an Algorithm Different from PGPS? ——Comments on"A Packet Fair Scheduler Based on GPS"

QI Wang-dong; PENG Lai-xian; DONG Min

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Is WFQ an Algorithm Different from PGPS? ——Comments on"A Packet Fair Scheduler Based on GPS"

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- Is WFQ an Algorithm Different from PGPS? ——Comments on"A Packet Fair Scheduler Based on GPS"
- Acta Electronica Sinica Vol. 31, Issue 12, Pages: 1889-1890(2003)
- 作者机构：
  
  1. 解放军理工大学计算机工程系,江苏,南京,210007
  2. 解放军理工大学电信工程系,江苏,南京,210007
  3. 解放军理工大学计算机工程系江苏南京,210007
  4. 解放军理工大学电信工程系江苏南京,210007
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN915.05
- Published：2003
- 稿件说明：
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QI Wang-dong, PENG Lai-xian, DONG Min. Is WFQ an Algorithm Different from PGPS? ——Comments on"A Packet Fair Scheduler Based on GPS"[J]. Acta Electronica Sinica, 2003, 31(12): 1889-1890.
DOI：

QI Wang-dong, PENG Lai-xian, DONG Min. Is WFQ an Algorithm Different from PGPS? ——Comments on"A Packet Fair Scheduler Based on GPS"[J]. Acta Electronica Sinica, 2003, 31(12): 1889-1890. DOI：

摘要

邬海涛等

[1]

声称"证明了WFQ、WF

Q等算法并不是P-GPS(基于分组的GPS)

也就不能保证P-GPS的时延及服务特性".不幸的是

该文对WFQ系统中一个关键概念"阻塞的连接的集合"的理解是错误的

因此导致该文的结论无效.

Abstract

Wu Hai-tao et al

[1]

.claim that they"have shown the two scheduling algorithms WFQ and WF

Q are not PGPS(packet-by-packet GPS) so that delay and service characteristics of the latter do not hold in the former two".Unfortunately

there is a fatal misunderstanding in their paper about an important concept

the set of busy sessions

in the WFQ algorithm

leading to the voidness of their claims.

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