Chelsio Communications Chelsio T5 Guia do Utilizador descarregar pdf (Página 253)

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XIX. Traffic Management

Chelsio T5/T4 Unified Wire For Linux Page 253

1. Introduction

Traffic Management capabilities built-in to Chelsio T5/T4 CNAs can shape transmit data traffic

through the use of sophisticated queuing and scheduling algorithms built-in to the ASIC

hardware which provides fine-grained software control over latency and bandwidth parameters

such as packet rate and byte rate. These features can be used in a variety of data center

application environments to solve traffic management problems.

Traffic Management features in Chelsio‘s adapters allows the user to control three main things:

 Guarantee low latency in the presence of other traffic

 Control max bandwidth that a connection or a flow (a group of connections) can use

 Allocate available bandwidth to several connection or flows based on desired levels of

performance

Once the offload transmit traffic shaping classes have been configured, individual offloaded

connections (flows) may be assigned to a traffic shaping class in order to manage the flows

according to the class configuration. The mechanism to accomplish this "flow to class" mapping

assignment is the Connection Offload Policy (COP) configuration system.

1.1. Hardware Requirements

1.1.1. Supported Adapters

The following are the currently shipping Chelsio Adapters that are compatible with the Traffic

Management feature.

T502-BT

T580-CR

T520-LL-CR

T520-CR

T522-CR

T580-LP-CR

T420-CR

T440-CR

T422-CR

T404-BT

T420-BCH

T440-LP-CR

T420-BT

T420-LL-CR

T420-CX

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