> -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of sreenaath > vasudevan > Sent: Saturday, July 9, 2016 12:23 AM > To: dev at dpdk.org > Subject: [dpdk-dev] QoS config variables > > Hi > Can someone throw some light on the following DPDK QoS config variables? > > A) In struct *rte_sched_subport_params* AND *rte_sched_pipe_params* > 1) tb_rate - Is the provisioned rate at which the TB can be filled while > enqueuing OR the TB rate slice allotted to this subport ? > 2) tb_size > 3) tc_rate - Is tc_period the time slice given to each class within a > subport? > 4) tc_period - Does tc_rate represent the bw rate provisioning for that > class? > > It would be nice if someone could throw the relationship between the above > parameters and the QoS scheduling algorithm > > Thanks ! > > -- > regards > sreenaath
Hi Sreenaath, Please check out the QoS documentation: http://www.dpdk.org/doc/guides/prog_guide/qos_framework.html. There is a section on traffic shaping and a section on traffic classes where there parameters are explained in detail. These parameters are also explained by the comments in file "rte_sched.h". Also this Youtube video might be useful to you: https://youtu.be/_PPklkWGugs TB stands for Token Bucket, TC stands for Traffic Class. The rate parameters are specified in bytes per second. The traffic classes share the subport/pipe bandwidth and are scheduled in strict priority. Regards, Cristian
