Hi DPDK team, The docs on QoS (http://dpdk.org/doc/guides/prog_guide/qos_framework.html# ) describe the traffic class (TC) as follows: 1 - The TCs of the same pipe handled in strict priority order. 2 - Upper limit enforced per TC at the pipe level. 3 - Lower priority TCs able to reuse pipe bandwidth currently unused by higher priority TCs. 4 - When subport TC is oversubscribed (configuration time event), pipe TC upper limit is capped to a dynamically adjusted value that is shared by all the subport pipes.
Can someone describe how and when the TC upper limit is "dynamically" changed? For example, assume there's a 1Gb/s port and a single 1Gb/s subport and 2000 pipes each of 1Mb/s (total pipes = 2Gb/s which is > the 1Gb/s subport which I think means "oversubscribed" as used in the doc). Each Pipe has a single TC. In that case, would each pipe be shaped to an upper limit of 0.5 Mb/s? What if there was no traffic on 1999 pipes, would the single active pipe still be limited to 0.5 Mb/s? What if the number of pipes changes without restarting the OS, how does that change the behavior? BTW, great docs overall, thanks for writing those up. Thanks, Greg Smith
