[Users] Delayed signalling?

[Daniel-Constantin Mierla]

On 12/14/06 17:03, samuel wrote:
> It might be due to a DNS query....whenver a request has to be
> forwarded to a domain, openSER makes a DNS query to resolv the IP.
> During this operation, the child processing the request will not
> answer to further incoming messages.
If proves to be because of DNS, the best is to install nscd (name 
service cache daemon) which will speed-up a lot DNS interaction. Having 
it in the system will help other applications to do DNS queries faster 
(e.g., asterisk, mail servers ...). It looks to be really powerful being 
able to cache many services, not only DNS. It comes packaged with most 
of common distributions.
>
> it also can be happening due to a spiral loop that stays on the server.
This shouldn't block the process, and if is t_relayed, a 100 reply 
should be sent back.

Cheers,
Daniel

>
> Without further information (confg,logs) it's hard to tell which is
> the reason...
>
> hope it helps,
> Samuel.
>
> without more information
>
> 2006/12/14, Max Gregorian <gregorian442 at googlemail.com>:
>> Hi all,
>>
>> Just wondering if anyone else has had this problem. I have noticed while
>> tracing on my OpenSER server, that every now and then the server 
>> receives a
>> packet which it does to respond to immediately, resulting in a string of
>> packets being sent to the server and then the server responding a few
>> seconds later. This does not happen all the time, just say maybe once or
>> twice every hour. The rest of the time the signaling is correct and
>> responses follow request packets in the correct order.
>>
>> What I am trying to figure out is whether this is a load traffic 
>> issue (i.e.
>> can the server not handle too much load), and if so is it OpenSER or the
>> network or the server in general? I have run diagnostics on the 
>> servers and
>> there is nothing wrong with the hardware.
>>
>> On the other hand Could this be related to any timer issues? I remember
>> there was mention of timers in SER but are there any default timer 
>> settings
>> that can be tweaked?
>>
>> Thanks in advance for any response.
>>
>>
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>>
>
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