That means that the conntrack numbers give an upper bound, no?
Best Regards
Sebastian
> On Sep 6, 2018, at 20:40, Dave Taht <[email protected]> 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 <[email protected]> wrote:
>>
>>
>>> On Sep 6, 2018, at 7:22 PM, Dave Taht <[email protected]> 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
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