On Fri, 2016-10-21 at 10:45 +0200, Jiri Kosina wrote:
> The original reason [1] for having hidden qdiscs (potential scalability
> issues in qdisc_match_from_root() with single linked list in case of large
> amount of qdiscs) has been invalidated by 59cc1f61f0 ("net: sched: convert
> qdisc linked list to hashtable").
>
> This allows us for bringing more clarity and determinism into the dump by
> making default pfifo qdiscs visible.
>
> [1]
> http://lkml.kernel.org/r/1460732328.10638.74.ca...@edumazet-glaptop3.roam.corp.google.com
>
> Signed-off-by: Jiri Kosina <jkos...@suse.cz>
> ---
Some of us are dealing with huge HTB hierarchies, so adding default fifo
in the dump will add more data pumped from the kernel.
BwE [1] for instance dumps qdisc/classes every 5 seconds.
I guess we'll need to not pull this patch in our kernels.
This reminds me of an HTB patch to avoid dumping rate estimates for HTB.
I will send it today.
[1]
http://static.googleusercontent.com/media/research.google.com/en//pubs/archive/43838.pdf
