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From: Stephen Hemminger <stephen@networkplumber.org>
To: "Liguzinski, WojciechX" <wojciechx.liguzinski@intel.com>
Cc: dev@dpdk.org, jasvinder.singh@intel.com,
	cristian.dumitrescu@intel.com, savinay.dharmappa@intel.com
Subject: Re: [dpdk-dev] [RFC PATCH 0/3] Add PIE support for HQoS library
Date: Mon, 24 May 2021 09:19:43 -0700
Message-ID: <20210524091943.2599114a@hermes.local> (raw)
In-Reply-To: <20210524105822.63171-1-wojciechx.liguzinski@intel.com>

On Mon, 24 May 2021 11:58:19 +0100
"Liguzinski, WojciechX" <wojciechx.liguzinski@intel.com> wrote:

> 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(-)

What about FQ codel which is more widely deployed, has less configuration?

  parent reply	other threads:[~2021-05-24 16:19 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-24 10:58 Liguzinski, WojciechX
2021-05-24 10:58 ` [dpdk-dev] [RFC PATCH 1/3] sched: add pie based congestion management Liguzinski, WojciechX
2021-05-25  9:16   ` Morten Brørup
2021-06-09  8:36     ` Liguzinski, WojciechX
2021-06-09 12:35       ` Morten Brørup
2021-05-24 10:58 ` [dpdk-dev] [RFC PATCH 2/3] example/qos_sched: add pie support Liguzinski, WojciechX
2021-05-24 10:58 ` [dpdk-dev] [RFC PATCH 3/3] example/ip_pipeline: " Liguzinski, WojciechX
2021-05-24 16:19 ` Stephen Hemminger [this message]
2021-05-25  8:56 ` [dpdk-dev] [RFC PATCH 0/3] Add PIE support for HQoS library Morten Brørup
2021-06-07 13:01   ` Liguzinski, WojciechX
2021-06-09 10:53 ` [dpdk-dev] [RFC PATCH v1 " Liguzinski, WojciechX
2021-06-09 10:53   ` [dpdk-dev] [RFC PATCH v1 1/3] sched: add PIE based congestion management Liguzinski, WojciechX
2021-06-09 10:53   ` [dpdk-dev] [RFC PATCH v1 2/3] example/qos_sched: add PIE support Liguzinski, WojciechX
2021-06-09 10:53   ` [dpdk-dev] [RFC PATCH v1 3/3] example/ip_pipeline: " Liguzinski, WojciechX
2021-06-15  9:01   ` [dpdk-dev] [RFC PATCH v2 0/3] Add PIE support for HQoS library Liguzinski, WojciechX
2021-06-15  9:01     ` [dpdk-dev] [RFC PATCH v2 1/3] sched: add PIE based congestion management Liguzinski, WojciechX
2021-06-15  9:01     ` [dpdk-dev] [RFC PATCH v2 2/3] example/qos_sched: add PIE support Liguzinski, WojciechX
2021-06-15 12:23       ` Morten Brørup
2021-06-15  9:02     ` [dpdk-dev] [RFC PATCH v2 3/3] example/ip_pipeline: " Liguzinski, WojciechX
2021-06-21  7:35     ` [dpdk-dev] [RFC PATCH v3 0/3] Add PIE support for HQoS library Liguzinski, WojciechX
2021-06-21  7:35       ` [dpdk-dev] [RFC PATCH v3 1/3] sched: add PIE based congestion management Liguzinski, WojciechX
2021-06-21 18:17         ` Stephen Hemminger
2021-06-22  7:39           ` Liguzinski, WojciechX
2021-06-21  7:35       ` [dpdk-dev] [RFC PATCH v3 2/3] example/qos_sched: add PIE support Liguzinski, WojciechX
2021-06-21  7:35       ` [dpdk-dev] [RFC PATCH v3 3/3] example/ip_pipeline: " Liguzinski, WojciechX
2021-07-05  8:04       ` [dpdk-dev] [RFC PATCH v4 0/3] Add PIE support for HQoS library Liguzinski, WojciechX
2021-07-05  8:04         ` [dpdk-dev] [RFC PATCH v4 1/3] sched: add PIE based congestion management Liguzinski, WojciechX
2021-07-16 13:20           ` Dumitrescu, Cristian
2021-07-16 15:11           ` Dumitrescu, Cristian
2021-07-05  8:04         ` [dpdk-dev] [RFC PATCH v4 2/3] example/qos_sched: add pie support Liguzinski, WojciechX
2021-07-05  8:04         ` [dpdk-dev] [RFC PATCH v3 3/3] example/ip_pipeline: add PIE support Liguzinski, WojciechX
2021-07-16 12:46         ` [dpdk-dev] [RFC PATCH v4 0/3] Add PIE support for HQoS library Dumitrescu, Cristian

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