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A difference weight queue scheduling apparatus and scheduling method for network processor

A network processor and scheduling device technology, applied in the field of data communication, can solve problems such as difficult implementation and high complexity of scheduling methods

Active Publication Date: 2007-05-30
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of high work complexity and difficult implementation of the existing scheduling method, and provide a scheduling method and a corresponding scheduling device that has better fairness and can suppress network burst transmission phenomena

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  • A difference weight queue scheduling apparatus and scheduling method for network processor
  • A difference weight queue scheduling apparatus and scheduling method for network processor
  • A difference weight queue scheduling apparatus and scheduling method for network processor

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0065] Before describing the difference weight queuing scheduling method of the present invention in detail, the main calculation parameters used in the method will be described first.

[0066] r: the total transmission speed of the system;

[0067] r i : The transmission speed assigned to flow queue i, ∑r i =r(i=0, 1, 2...n-1, n is the number of flow queues, the same below);

[0068] L i k : The length of the first frame of flow queue i when scheduling the kth time;

[0069] the s k : The kth scheduling, the number of the scheduled flow queue;

[0070] P i : The proportion of the total transmission bandwidth of flow queue i, P i = r i r ;

[0071] D. i k : During the kth scheduling, the flow queue i expe...

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Abstract

This invention discloses one difference right re-arrange line method based on network processor, which comprises the following steps: according to each line head frame length, each transmission wide band and last time transfer result computing wait transfer each priority; according to priority selecting subject from lines; sending dispatch result and deleting it from send frame and then repeating above operations. This invention also discloses one transfer device, which comprises priority buffer register, line send control device, priority compute device and line selection arbitrary device.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a balance weight queuing scheduling device and scheduling method for network processors. Background technique [0002] The rapid growth of network bandwidth and network service demand requires network core equipment to provide higher transmission bandwidth and deeper packet processing capabilities. Due to its high-speed processing performance and high flexibility, the network processor is replacing the traditional GPP (general-purpose processor), ASIC (application-specific integrated circuit) and FPGA (field-programmable array) and other implementation methods, becoming the next-generation network equipment. core. This requires the network processor to provide better service control functions, especially in order to meet the growing requirements of differentiated services, the scheduling method used must have better performance. On the other hand, due to the hardware...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L47/6275
Inventor 宫曙光李华伟李晓维
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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