Simple Module WRRScheduler

Package: inet.common.queue
File: src/inet/common/queue/WRRScheduler.ned

C++ definition

This module implements weighted round-robin scheduling.

There is a weight associated with each input gate. Initially each input gate gets as many tokens as their weight. When a packet is requested then the first input gate is selected that has a packet and enough tokens, and one token is consumed. When there are waiting input packets, but there is no enough tokens to schedule one, then each token bucket is filled up.

This module implements the IPassiveQueue C++ interface, therefore it can be used as the queue component of a NIC, and as the input of another scheduler.

WRRScheduler

Usage diagram:

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram:

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Used in compound modules:

Name Type Description
DiffservQueue compound module

This is an example queue, that can be used in interfaces of DS core and edge nodes to support the AFxy (RFC 2597) and EF (RFC 3246) PHBs.

DSQueue1 compound module

Diffserv Queue used in Experiment 1.1 - 1.6 and 5.1.

DSQueue2 compound module

Diffserv Queue used in Experiment 2.1 - 2.4.

Parameters:

Name Type Default value Description
weights string

Properties:

Name Value Description
display i=block/server

Gates:

Name Direction Size Description
in [ ] input
out output

Source code:

//
// This module implements weighted round-robin scheduling.
//
// There is a weight associated with each input gate.
// Initially each input gate gets as many tokens as their
// weight. When a packet is requested then the first input
// gate is selected that has a packet and enough tokens,
// and one token is consumed. When there are waiting input
// packets, but there is no enough tokens to schedule one,
// then each token bucket is filled up.
//
// This module implements the IPassiveQueue C++ interface,
// therefore it can be used as the queue component of a NIC,
// and as the input of another scheduler.
//
simple WRRScheduler
{
    parameters:
        string weights;
        @display("i=block/server");

    gates:
        input in[];
        output out;
}