Re: [PATCH net-next v2 0/3] Some optimization for lockless qdisc

From: Vladimir Oltean
Date: Tue Jun 08 2021 - 08:53:58 EST


On Thu, Jun 03, 2021 at 11:35:48AM -0700, Jakub Kicinski wrote:
> 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@xxxxxxxxxx>

Any idea why these patches are deferred in patchwork?
https://patchwork.kernel.org/project/netdevbpf/cover/1622684880-39895-1-git-send-email-linyunsheng@xxxxxxxxxx/