Hello Till,

on my side i am using sysdig on order to check what is wrong on the 
system and it really help to understand where is the bottleneck.

Also in the next few week i will probably work on pfbandwithd, so i will 
add the usage of pfqueue.

Regards

Fabrice



Le 2016-11-05 à 08:33, g4-l...@tonarchiv.ch a écrit :
> Hello Fabrice,
>
> Ah you think that also the DB could be the bottleneck? Hard drive I/O
> isn't - latency is still under 1ms and buffers are not filling up.
>
> I guess I need some more fine grained monitoring the understand what is
> going on...
>
> Any advice on how to monitor which process is eating CPU? With htop it
> always is pfbandwidth on the top line of CPU time use.
>
> I was think that, because it is only one CPU core loaded to 100%, it
> must be a single thread. You think that DB handling of the pfbandwidth
> thread could be the time consuming part?
> Some buffering with a queue sounds like a good solution then.
>
> Thank you,
> Till
>
>
> On 05.11.2016 00:27, Durand fabrice wrote:
>> Hello Till,
>>
>> We probably can do something and save the stats via pfqueue
>> (inline_accounting_update_session_for_ip in pfqueue).
>>
>> It need a little bit of dev (really few).
>>
>> also can you check one the db side if there is no issue ?
>>
>> Regards
>>
>> Fabrice
>>
>>
>>
>> Le 2016-10-30 à 05:04, g4-l...@tonarchiv.ch a écrit :
>>> Hi there,
>>>
>>> We are using PF in in-band mode and also have accounting enabled.
>>>
>>> Now it seems that pfbandwidth is the bottleneck in this setup.
>>> We have 4 core CPU, 8GB RAM and SSD disk. I/O latency and RAM usage is
>>> no issue. But pfbandwidth takes 100% of one core when we put some load
>>> on the box (10 clients, total of approx. 10MB/s).
>>>
>>> I understand that pfbandwidth has to be single threaded because of the
>>> way how it gets the traffic data from the kernel.
>>> But I wonder if there is some way to tune it to get a better performance
>>> under high load?
>>>
>>> Best regards,
>>> Till
>>>
>>>
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