2017-01-30 - Re: [GRASE-Hotspot] is coova-chilli compiled with –with-nfcoova ?

Header Data

From: Gianluca Filippini <gi***4@gmail.com>
Message Hash: cc0c20919e715030e9be3a7326241f0755b069fe596d798b7374a63a91a29ff5
Message ID: <a094ec0d-f289-4f94-993e-c3004938e3d7@grasehotspot.org>
Reply To: <CAESLx0K04ZmqxmeieiRr0s+Xst8+Dp9z++7C-14=gsiCuxdptg@mail.gmail.com>
UTC Datetime: 2017-01-30 09:20:41 UTC
Raw Date: Mon, 30 Jan 2017 08:20:41 -0800

Raw message 

thanks Tim,
I'll have to play around with the accounting interval..

yeah .. I have a medium-large setup and that is the root cause of my 
problems I suppose.
I've already tweaked the number of threads for the database and other  
variables .. but I still see this issue when I reach the peak of load.

in average I have 120 users, peak of 180, generating a constant  30Mbit/s 
with a peak of 60Mbit/s of traffic.
the machine has plenty of resources .. 16G ram, 4cores xeon 3.2Ghz .. and a 
100Mbit/s symmetrical (FTTH)
monitoring the hw I don;t see it to max out cpu / ram anytime

still ... I'm at the point where freeradius get stuck and I need to restart 
processes (if not the whole machine) very frequently.
when the load is lower (like 30/40 users) everything seems stable..

I suspect coova/freeradius are the culprit of this problem

thanks



On Monday, January 30, 2017 at 12:27:18 PM UTC+1, timwhite88 wrote:
>
> Hi Gianluca
>
> Unfortunately nfcoova is a kernel module, so much harder to setup. It 
> would require that we build it targeted at a specific kernel version, on a 
> specific Linux distribution and version. 
> I am doing work on splitting the repository into multiple, one per distro 
> version, however even when that's done, it'll take lots of time for me to 
> get the nfcoova stuff working in a nice way that I can package it and have 
> it reliably run.
>
> Having said that, the error messages you have posted don't suggest you 
> need nfcoova, but rather you need to work out why the radius queue is full, 
> and tweak that. Monitor your server for high load, see if it's a database 
> server issue, or is it freeradius. If you look for a recent post on the 
> mailing list, you'll see another thing to try is changing the Accounting 
> Interval.
>
> nfcoova is only for throughput issues, so you need a large upstream pipe, 
> and enough users that you can actually utilise that pipe.
>
> Regards
>
> Tim
>
> On Mon, Jan 30, 2017 at 5:56 PM, Gianluca Filippini <
> gi***.@gmail.com <javascript:>> wrote:
>
>> Hi Tim et all,
>> one of the issues that I have on my current (old) grase installation 
>> (medium large ... ~200 users) is that quite often freeradius dies  with a 
>> message like
>>
>> Jan 30 08:35:06 wifi coova-chilli[1220]: radius.c: 240: radius queue is 
>>> full! qnext=83 qsize=0
>>> Jan 30 08:35:06 wifi coova-chilli[1220]: chilli.c: 1503: 
>>> radius_default_pack() failed
>>>
>>
>> so I looked for solutions and I ended up focusing on these two links:
>>  
>> https://github.com/coova/coova-chilli/issues/61
>> https://coova.github.io/mail-archive/chilli/2010-April/001239.html
>>
>> it seems that performance is an issue for large amount of traffic unless 
>> we use this module for xt-coova.
>>
>> is this available in the current GRASE release? it seems to me that a new 
>> compile option is needed.
>>
>> thanks
>>
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