摘要： 传统的基于crossbar 的输入排队交换结构在提供良好的QOS 方面存在很大的不足，而CICQ(combined input and crosspoint bufferedqueuing)交换结构与传统的交换结构相比，不但能在各种输入流下提供接近输出排队的吞吐率，而且能提供良好的QoS 支持。文章分析了CICQ 结构的流控实现机制，讨论了基于信用的流控机制的开销和实现方案，对crosspoint 缓存容量作了分析，给出了在各种存储器写入条件下，保持交换结构100%吞吐率所需的最小缓存容量。
关键词:
CICQ 交换结构；基于信用的流控机制；Crosspoint 缓存容量
Abstract: Traditional input-queued switches based on crossbar are insufficient in providing good QoS performance. As a contrast, the CICQ(combined input and crosspoint queuing) switches can provide almost 100% throughput under different input traffic, its performance is very closed to the OQ(output-queued) switch, and has the potentials to support good QoS. This paper analyzes the mechanism of flow-control, discusses the scheme for credit-based flow control, and analyzes the minimum buffer size in crosspoint required to realize 100% throughput
Key words:
CICQ switch; Credit-based flow-control mechanism; Crosspoint buffer size
王荣，林予松. CICQ交换的流控实现机制和交叉点缓存容量分析[J]. 计算机工程, 2006, 32(7): 240-242.
WANG Rong, LIN Yusong. Realization of Flow-control Mechanism and Analysis of Crosspoint Buffer Size in CICQ Switch[J]. Computer Engineering, 2006, 32(7): 240-242.