Chelsio Communications Chelsio T5 Guide de l'utilisateur télécharger pdf (Page 215)

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XVI. Traffic Management

Chelsio T5/T4 Unified Wire For Linux Page 215

4.1.2. Class Weighted Round Robin

Incoming traffic flows from various applications can be prioritized and provisioned using a

weighted round-robin scheduling algorithm.

Class weighted round robin can be configured using the following command:

[root@host]# cxgbtool <ethX> sched-class params type packet level cl-wrr

mode class rate-unit bits rate-mode absolute channel <Channel No.> class

<scheduler-class-index> weight <Y>

Here,

 ethX is the Chelsio interface

 Channel No. is the port on which data is flowing (0-3).

 scheduler-class-index is the TCP traffic class (0-14)

 weight is the weight to be used for a weighted-round-robin scheduling hierarchy. Possible

values include 1 to 99.

4.1.3. Channel Rate Limiting

This scheduler hierarchy level can be used to rate limit individual channels.

Channel rate limiting can be configured using the following command:

[root@host]# cxgbtool <ethX> sched-class params type packet level ch-rl

mode class rate-unit <scheduler-rate-unit> rate-mode <scheduler-rate-mode>

channel <Channel No.> class 0 max-rate <maximum-rate> pkt-size <Packet

size>

Here,

 ethX is the Chelsio interface

 scheduler-rate-unit specifies whether the traffic management rule is configured for bit-rate or

packet rate . Possible values include bits or pkts

 scheduler-rate-mode specifies whether the traffic management rule is configured to support

a percent of the channel rate or an effective rate. Possible values include relative or

absolute.

 Channel No. is the port on which data is flowing (0-3).

Class Weighted Round Robin level is not supported on T5 adapters.

Note

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Chelsio Communications Chelsio T5 Guide de l'utilisateur Page 215

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