DPDK sched library is equipped with mechanism that secures it from the bufferbloat problem which is a situation when excess buffers in the network cause high latency and latency variation. Currently, it supports RED for queue congestion control (which is designed to control the queue length but it does not control latency directly and is now being obsoleted ). However, more advanced queue management is required to address this problem and provide desirable quality of service to users.
This solution (RFC) proposes usage of new algorithm called "PIE" (Proportional Integral controller Enhanced) that can effectively and directly control queuing latency to address the bufferbloat problem. The implementation of mentioned functionality includes modification of existing and adding a new set of data structures to the library, adding PIE related APIs. This affects structures in public API/ABI. That is why deprecation notice is going to be prepared and sent. Liguzinski, WojciechX (3): sched: add pie based congestion management example/qos_sched: add pie support example/ip_pipeline: add pie support config/rte_config.h | 1 - drivers/net/softnic/rte_eth_softnic_tm.c | 4 +- examples/ip_pipeline/tmgr.c | 4 +- examples/qos_sched/app_thread.c | 1 - examples/qos_sched/cfg_file.c | 82 +++++++-- examples/qos_sched/init.c | 5 +- examples/qos_sched/profile.cfg | 196 +++++++++++++------- lib/sched/meson.build | 10 +- lib/sched/rte_sched.c | 220 +++++++++++++++++------ lib/sched/rte_sched.h | 53 ++++-- 10 files changed, 411 insertions(+), 165 deletions(-) -- 2.17.1 -------------------------------------------------------------- Intel Research and Development Ireland Limited Registered in Ireland Registered Office: Collinstown Industrial Park, Leixlip, County Kildare Registered Number: 308263 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
