[OpenSIPS-Users] with more PIDs i would have more capacity?

[Vlad Paiu]

Hello,

In the current OpenSIPS design most of the operations are done in 
blocking mode ( DB, DNS, etc ). So, it is useful to have more SIP 
children, because in case on child gets blocked in doing a database 
operation, for example, other SIP children will come and process the SIP 
traffic.

Yes, the number of children should be chosen depending on the hardware 
available, especially the number of CPU cores available on the machine. 
Too few SIP children will not use the hardware to it's full potential, 
while too many SIP children, compared to the number of CPU cores, might 
downgrade performance, because of the heavy process context switching 
that will be happening.


Regards,

-- 
Vlad Paiu
OpenSIPS Developer



On 07/22/2011 01:19 PM, Toyima Dias wrote:
> Hello,
> I would like to know, what's the really purpose of fork and children 
> on the config file? if i put children=8 opensips will create 8 PIDs 
> for each listen interface...right? so, if i increase the value of 
> children the capacity on terms of call handling will increase in 
> opensips? with more PIDs more calls will be handling faster? or it 
> only depends on the hardware capacity? is there any recommendation for 
> a value on children?
>
> Regards
>
>
>
>
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> Users at lists.opensips.org
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