Ahhh.... your 2cts made mine fall down....
The issue was not the %cpu used, but my interpretation of the figures

No matter if you call it PEBCAK or RTFM... I owe you à beer whenever you
come to Belgium :=)

Thanks !! Really appreciate the info !

Patrick DERWAEL
Rue de la Fontaine, 3
4210 Burdinne
0479/80.50.79
Le 31 mai 2016 20:23, "Ajit Sarnaik" <[email protected]> a écrit :

> Hello Patrick,
>
> Are you reading the CPU utilization using top from the %CPU column. If so
> that is ok. This represents the utilization of the core that NTOP is
> running on. What you should be worried about is the utilization at the top
> for the system as a whole.
>
> My 2Cs worth.
>
> Regards,
>
> Ajit
>
> On Tue, May 31, 2016 at 7:27 AM, Patrick DERWAEL <[email protected]>
> wrote:
>
>> Simone,
>>
>> This runs on a Zotac CI323 (Intel N3150 quad-core 1.6GHz, 8GB Ram, 120GB
>> HD)
>>
>> Current config file just says:
>> -G=/var/tmp/ntopnd.pid
>>
>> Number of hosts: 60-80
>> Number of flows: 100-120
>>
>> %CPU used by ntopng 25-35% (as measured by top)
>>
>> Do you think this %CPU makes sense in this context?
>>
>> Thanks
>>
>> 2016-05-31 12:17 GMT+02:00 Simone Mainardi <[email protected]>:
>>
>>> Patrick,
>>>
>>> If the router has very limited resources then this may be expected
>>> behavior. However, please post ntopng configuration used, as well as the
>>> number of active hosts/flows read from the bottom right corner of the UI.
>>>
>>> Simone
>>>
>>> On Tue, May 31, 2016 at 12:01 PM, Patrick DERWAEL <[email protected]>
>>> wrote:
>>>
>>>> Hi Simone,
>>>>
>>>> The high cpu is permanent, no matter of thé web interface usage
>>>> Ntop runs on a Tor router on centos 7
>>>>
>>>> Patrick DERWAEL
>>>> Rue de la Fontaine, 3
>>>> 4210 Burdinne
>>>> 0479/80.50.79
>>>> Le 31 mai 2016 11:44, "Simone Mainardi" <[email protected]> a écrit :
>>>>
>>>>> Patrick,
>>>>>
>>>>> Does the high cpu consumption occur when using the ntopng web UI? Or
>>>>> it does not matter?
>>>>> Which router are you using?
>>>>>
>>>>> On Mon, May 30, 2016 at 12:45 PM, Patrick DERWAEL <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> Hi all
>>>>>>
>>>>>> Just installed ntop on a router running on centos 7 in à small home
>>>>>> lan
>>>>>> Ntop is taking permanently 25-30% cpu
>>>>>>
>>>>>> The traffic is not in average very high: 150-200kB
>>>>>>
>>>>>> Any clue where i should start searching?
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> _______________________________________________
>>>>>> Ntop mailing list
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>>>>>> http://listgateway.unipi.it/mailman/listinfo/ntop
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>
>>>> _______________________________________________
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>>>
>>>
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>>
>>
>>
>> --
>>
>> Patrick Derwael
>> Rue de la fontaine, 3
>> 4210 Burdinne
>> G:0479.80.50.79
>>
>>
>>
>> _______________________________________________
>> Ntop mailing list
>> [email protected]
>> http://listgateway.unipi.it/mailman/listinfo/ntop
>>
>
>
>
> --
> Ajit Sarnaik
>
> _______________________________________________
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