moeller0 at gmx.de
Thu Sep 6 14:42:27 EDT 2018
That means that the conntrack numbers give an upper bound, no?
> On Sep 6, 2018, at 20:40, Dave Taht <dave.taht at gmail.com> wrote:
> 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 at heistp.net> wrote:
>>> On Sep 6, 2018, at 7:22 PM, Dave Taht <dave.taht at 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 at FreeNetVysina:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
>> FreeNetJerab:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
>> FreeNetOldrichova:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l
>> 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
> Tel: 1-669-226-2619
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