[ixpmanager] League table

[Barry O'Donovan]

Thanks for the follow up Mario - we'll certainly look to iterative 
improvements.

  - Barry

Mario Klobucar wrote on 23/03/2020 14:40:
> Hi Barry
> 
> Thanks for explaining.
> When we are comparing data from LibreNMS and (IXP manager x 33,3/24) we are
> getting similar results.
> 
> If you can improve reporting in future that would be great.
> 
> Thanks
> mario
> 
> -----Original Message-----
> From: Barry O'Donovan <barry.odonovan at inex.ie>
> Sent: 23 March 2020 10:47
> To: INEX IXP Manager Users Mailing List <ixpmanager at inex.ie>; Mario Klobucar
> <Mario.Klobucar at srce.hr>
> Subject: Re: [ixpmanager] League table
> 
> Hi Mario,
> 
> Mario Klobucar wrote on 23/03/2020 08:38:
>> I am trying to calculate how much data is crossing exchange (or port).
>>
>> When I look at one member port I am getting different results for one day.
>>
>> a)When I take daily avg for that port and then calculate 24*3000/8 I
>> am geting 47.89 TB
>>
>> b)When I look at league table I am getting 84.62 TB
>>
>> c)When I look at LibreNms and avg there I am getting 55.62.TB
>>
>> There is a huge difference in calcuating from awg and league table data.
>>
>> Can someone explain me why is there difference, and more important
>> which metod should I use for calculating data that is passing exchange.
> 
> 
> If you look at an IXP Manager graph, you'll notice a 'day' graph is not
> 24 hours but rather 33.3 hours and a week is actually 8.33 days. Where did
> this come from? We started over 15 years ago with MRTG and have mostly
> followed its methodology (see mrtg's src/rateup.c).
> 
> This is fine within IXP Manager because the league table (and the new
> utilisation tool) compares like with like.
> 
> I can't speak to what LibreNMS does.
> 
> If I wanted to calculate (estimate) how much data is crossing exchange I'd
> probably grab the ixp/ixp001-bits.log file in MRTG and take a 24 hours
> period (say midnight to midnight).
> 
> I'll have a think about if we can/should better represent a day as 24 hours
> in the league table (or even create a different tool / report for that
> information).
> 
>    - Barry
> 
> 
> 
> 
> 
> 
> 
> 


-- 

Kind regards,
Barry O'Donovan
INEX Operations

https://www.inex.ie/support/
+353 1 531 3339