[OpenSIPS-Users] children

[Liviu Chircu]

Hello Ionut,

I would consider increasing the UDP buffers first. Here are the default 
sizes in the 3.2 kernel:

/liviu at Workstation:~$ cat /proc/sys/net/ipv4/udp_wmem_*//
4096
///liviu at Workstation:~$ /cat /proc/sys/net/ipv4/udp_rmem_*/
/4096/

If you see they are still getting full after setting them to 16MB, for 
example, then you need extra workforce from OpenSIPS.

Best regards,

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com

On 12/17/2013 02:45 PM, Ionut Muntean wrote:
> Hi,
>
> So if /Send-Q/ and /Recv-Q /are above 0 for say, half a second, that 
> means that the buffers are getting constantly full and there is need 
> for more opensips children?
>
> BR,
> Ionut
>
> On 12/17/2013 02:42 PM, Miha wrote:
>> tnx!
>>
>> see now it is 0.
>>
>> br,
>> miha
>>
>> Dne 12/17/2013 1:40 PM, pis(e Liviu Chircu:
>>> You don't see the /Send-Q/ and /Recv-Q/ columns?
>>>
>>> liviu at Workstation:~$ netstat --version
>>> net-tools 1.60
>>> netstat 1.42 (2001-04-15)
>>> Liviu Chircu
>>> OpenSIPS Developer
>>> http://www.opensips-solutions.com
>>> On 12/17/2013 02:26 PM, Miha wrote:
>>>> Liviu,
>>>>
>>>> just one thing. How can I monitor opensips buffers to see if they 
>>>> are getting full?
>>>>
>>>> whith /watch -n0.1 'netstat -ulnp /I can see on which port and 
>>>> protocil opensips is listening.
>>>>
>>>> tnx!
>>>>
>>>> miha
>>>> Dne 12/17/2013 12:48 PM, pis(e Liviu Chircu:
>>>>> You could monitor the UDP receive queue on your interfaces with:
>>>>>
>>>>> /watch -n0.1 'netstat -ulnp'/
>>>>>
>>>>> If you constantly see your OpenSIPS listening interface buffers 
>>>>> getting full, then you need more than 8 SIP workers.
>>>>>
>>>>> Best regards,
>>>>> Liviu Chircu
>>>>> OpenSIPS Developer
>>>>> http://www.opensips-solutions.com
>>>>> On 12/17/2013 12:56 PM, Miha wrote:
>>>>>> Liviu,
>>>>>>
>>>>>> tnx I am using DB queries, exec commands (this happends only for 
>>>>>> sending mail due to some abuse, very very rarely), enum lookup, 
>>>>>> radius for accouting, load_balancing,... and CPU has 8 cors.
>>>>>>
>>>>>> I have set number of children to 8. Is there any way to determine 
>>>>>> if this is ok or how will I know? Is it better to use 12?
>>>>>>
>>>>>> br,
>>>>>> miha
>>>>>>
>>>>>>
>>>>>> Dne 12/17/2013 11:37 AM, pis(e Liviu Chircu:
>>>>>>> Hello,
>>>>>>>
>>>>>>> There is no simple answer, choosing the appropriate number of 
>>>>>>> children is scenario-dependant.
>>>>>>>
>>>>>>> If, for example, you are not performing I/O operations (DB 
>>>>>>> queries, exec commands, etc.), then the number of children 
>>>>>>> should be dictated by the *number of cores* on your box.
>>>>>>>
>>>>>>> On the other side, when your SIP workers will perform lots of 
>>>>>>> disk operations (which are slow), then you should use a lot more 
>>>>>>> children than mentioned above. (e.g. 12, 16 or 20 children).
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Liviu Chircu
>>>>>>> OpenSIPS Developer
>>>>>>> http://www.opensips-solutions.com
>>>>>>> On 12/17/2013 09:56 AM, Miha wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> how to dermine how many children do I need (default I have 4)?
>>>>>>>> I did not find any appropriate explanation.
>>>>>>>>
>>>>>>>> tnx!
>>>>>>>>
>>>>>>>> miha
>>>>>>>>
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