netdev - [PATCH net-next 0/4] net_sched: sch

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Date: Wed, 20 Sep 2023 12:54:14 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Willem de Bruijn <willemb@...gle.com>, Jamal Hadi Salim <jhs@...atatu.com>, 
	Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org, 
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 0/4] net_sched: sch_fq: round of improvements

For FQ tenth anniversary, it was time for making it faster.

The FQ part (as in Fair Queue) is rather expensive, because
we have to classify packets and store them in a per-flow structure,
and add this per-flow structure in a hash table.

Most fq qdisc are almost idle. Trying to share NIC bandwidth has
no benefits, thus the qdisc could behave like a FIFO.

Eric Dumazet (4):
  net_sched: sch_fq: struct sched_data reorg
  net_sched: sch_fq: change how @inactive is tracked
  net_sched: sch_fq: add fast path for mostly idle qdisc
  net_sched: sch_fq: always garbage collect

 include/uapi/linux/pkt_sched.h |   1 +
 net/sched/sch_fq.c             | 127 ++++++++++++++++++++++++---------
 2 files changed, 96 insertions(+), 32 deletions(-)

-- 
2.42.0.459.ge4e396fd5e-goog