Re: [PATCH net-next v2 0/3] Some optimization for lockless qdisc
From: Jakub Kicinski <kuba@kernel.org>
Date: 2021-06-03 18:35:53
Also in:
bpf, lkml, netdev
On Thu, 3 Jun 2021 09:47:57 +0800 Yunsheng Lin wrote:
Patch 1: remove unnecessary seqcount operation.
Patch 2: implement TCQ_F_CAN_BYPASS.
Patch 3: remove qdisc->empty.
Performance data for pktgen in queue_xmit mode + dummy netdev
with pfifo_fast:
threads unpatched patched delta
1 2.60Mpps 3.21Mpps +23%
2 3.84Mpps 5.56Mpps +44%
4 5.52Mpps 5.58Mpps +1%
8 2.77Mpps 2.76Mpps -0.3%
16 2.24Mpps 2.23Mpps +0.4%
Performance for IP forward testing: 1.05Mpps increases to
1.16Mpps, about 10% improvement.Acked-by: Jakub Kicinski <kuba@kernel.org>