[dpdk-dev] Traffic scheduling in DPDK

[ravulakollu.kumar at wipro.com]

Thanks Jasvinder , I am running the below command

./build/qos_sched -c 0xe -n 1  -- --pfc "0,1,3,2" --cfg ./profile.cfg

Bound two 1G physical ports to DPDK , and started running the above command with the default profile mentioned in profile.cfg .
I am using lcore 3 and 2 for RX and TX. It was not successful, getting the below error.

APP: Initializing port 0... PMD: eth_igb_rx_queue_setup(): sw_ring=0x7f5b20ba2240 hw_ring=0x7f5b20ba2680 dma_addr=0xbf87a2680
PMD: eth_igb_tx_queue_setup(): To improve 1G driver performance, consider setting the TX WTHRESH value to 4, 8, or 16.
PMD: eth_igb_tx_queue_setup(): sw_ring=0x7f5b20b910c0 hw_ring=0x7f5b20b92100 dma_addr=0xbf8792100
PMD: eth_igb_start(): <<
done:  Link Up - speed 1000 Mbps - full-duplex
APP: Initializing port 1... PMD: eth_igb_rx_queue_setup(): sw_ring=0x7f5b20b80a40 hw_ring=0x7f5b20b80e80 dma_addr=0xbf8780e80
PMD: eth_igb_tx_queue_setup(): To improve 1G driver performance, consider setting the TX WTHRESH value to 4, 8, or 16.
PMD: eth_igb_tx_queue_setup(): sw_ring=0x7f5b20b6f8c0 hw_ring=0x7f5b20b70900 dma_addr=0xbf8770900
PMD: eth_igb_start(): <<
done:  Link Up - speed 1000 Mbps - full-duplex
SCHED: Low level config for pipe profile 0:
    Token bucket: period = 3277, credits per period = 8, size = 1000000
    Traffic classes: period = 5000000, credits per period = [12207, 12207, 12207, 12207]
    Traffic class 3 oversubscription: weight = 0
    WRR cost: [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]
EAL: Error - exiting with code: 1
  Cause: Unable to config sched subport 0, err=-2

Please, tell me whether I am missing any other configuration.

Thanks,
Uday


-----Original Message-----
From: Singh, Jasvinder [mailto:jasvinder.singh at intel.com]
Sent: Monday, January 04, 2016 9:26 PM
To: Ravulakollu Udaya Kumar (WT01 - Product Engineering Service); dev at dpdk.org
Subject: RE: [dpdk-dev] Traffic scheduling in DPDK

Hi Uday,


> I have an issue in running qos_sched application in DPDK .Could
> someone tell me how to run the command  and what each parameter does
> In the below mentioned text.
>
> Application mandatory parameters:
>     --pfc "RX PORT, TX PORT, RX LCORE, WT LCORE" : Packet flow configuration
>            multiple pfc can be configured in command line


RX PORT - Specifies the packets receive port TX PORT - Specifies the packets transmit port RXCORE - Specifies the  Core used for Packet reception and Classification stage of the QoS application.
WTCORE-  Specifies the  Core used for Packet enqueue/dequeue operation (QoS scheduling)  and subsequently transmitting the packets out.

Multiple pfc  can be specified depending upon the number of instances of qos sched required in application.  For example- in order to run two instance, following can be used-

./build/qos_sched -c 0x7e -n 4 -- --pfc "0,1,2,3,4" --pfc "2,3,5,6" --cfg "profile.cfg"

First instance of qos sched receives packets from port 0 and transmits its packets through port 1 ,while second qos sched will receives packets from port 2 and transmit through port 3. In case of single qos sched instance, following can be used-

./build/qos_sched -c 0x1e -n 4 -- --pfc "0,1,2,3,4" --cfg "profile.cfg"


Thanks,
Jasvinder
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