Software/Driver Configuration And Fine-Tuning; Traffic Management Rules - Chelsio Communications Terminator Series Installation And User Manual

Chapter XXIII. Traffic Management

Software/Driver Configuration and Fine-tuning

3.1.

Traffic Management Rules

Traffic Management supports the following types of scheduler hierarchy levels which can be
configured using the cxgbtool utility:
i. Class Rate Limiting
ii. Class Weighted Round Robin
iii. Channel Rate Limiting
Class Rate Limiting
This scheduler hierarchy level can be used to rate limit individual traffic classes or individual
connections (flow) in a traffic class.
Class rate limiting can be configured using the following command:
[root@host~]# cxgbtool <ethX> sched-class params type packet level cl-rl
mode <scheduler-mode>
<scheduler-rate-mode> channel <Channel No.> class <scheduler-class-index>
max-rate <maximum-rate>
Here,
ethX
scheduler-mode
scheduler-rate-unit
scheduler-rate-mode
Channel No.
scheduler-class-index
maximum-rate
Packet size
Chelsio Unified Wire for Linux
rate-unit <scheduler-rate-unit>
pkt-size <Packet size>
: Chelsio interface
: specifies whether the rule is configured for individual traffic classes
or individual connections (flow) in a traffic class. Possible values
include flow or class.
: Specifies whether the rule is configured for bit-rate or packet rate.
Possible values include bits or pkts.
: Specifies whether the rule is configured to support a percent of the
channel rate or an effective rate. Possible values include relative or
absolute.
: Port on which data is flowing (0-3).
: TCP traffic class (0-14 for T4 series of adapters and 0-15 for
T5/T6 series of adapters).
: Bit rate (Kbps) for this TCP stream. The lower limit is 10 Kbps.
: TCP mss size in bytes; for example - for an MTU of 1500, use a
packet size of 1460.
rate-mode
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