Re: [Cake] fq_codel_fast

[Dave Taht <dave.taht@gmail.com>]

re: conntrack - I think the udp standard for holding a hole punch open
is 2-3 minutes. I've
seen 30 sec or less in the field.

On Thu, Sep 6, 2018 at 11:36 AM Pete Heist <pete@heistp.net> wrote:
>
>
> > On Sep 6, 2018, at 7:22 PM, Dave Taht <dave.taht@gmail.com> wrote:
> >
> > There was a very good paper or two (I think luca co-authored one) that
> > showed that "active flows" were generally measured in the mid 200s in
> > nearly any scenario. I agreed with that which was in part why I felt
> > we could stick
> > with 1024 queues, a direct mapped hash, and a couple collisions.
>
> So I’m not sure if this is a great way to gauge active flow counts through a router, but at 8pm:
>
> root@FreeNetVysina:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
> 446
> FreeNetJerab:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
> 181
> FreeNetOldrichova:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
> 228
>
> Far from my estimate of tens. Many of those can be idle connections, I suspect. 60-80% of them are http/s.
>


-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619