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Message-ID: <20230516200251.444f633f@hermes.local>
Date: Tue, 16 May 2023 20:02:51 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: Thorsten Glaser <t.glaser@...ent.de>
Cc: Toke Høiland-Jørgensen <toke@...e.dk>, Jakub
 Kicinski <kuba@...nel.org>, netdev@...r.kernel.org, Haye.Haehne@...ekom.de
Subject: Re: knob to disable locally-originating qdisc optimisation?

On Wed, 17 May 2023 01:47:10 +0200 (CEST)
Thorsten Glaser <t.glaser@...ent.de> wrote:

> On Tue, 16 May 2023, Stephen Hemminger wrote:
> 
> >Sounds like it could be extension or part of existing netem.  
> 
> No, it does so much more… very extensive reporting to userspace
> using debugfs/relayfs, for example, and very specific extra
> behaviour. We did look at netem, but it caused trouble.
> 
> bye,
> //mirabilos

The bottom line is the upstream kernel is very unlikely to accept
an knob that is only useful with a non upstream kernel component.

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