how to periodically monitor the qdisc size ?

[Shiyao Ma]

Hi Valdis,

I am in the process of doing an emulation of a dumbbell topology,  on my
linux box.


> > I am using the RED qdsic.
>
> You have our condolences.  RED is probably not the best choice of
> qdisc, because it requires very careful tuning of multiple parameters.
>

I am using RED for the part of emulating a switch.  Since most switches are
use AQM of RED/ECN.



>
> You might want to investigate using fq_codel, or for very new
> kernels, use the fq qdisc and the bbr congestion control method.
>


Yes. For the sending side,  I am already using fq+bbr.



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