[asterisk-users] Asterisk choking on voice messagesannouncements

[Jeff Brower]

Bruce-

> How can I find out what the source of the problem is guys?
>
> As I said I didn't change anything, except for making few minor changes to
> the firewall today and that was at Amazon firewall level and not within
> CentOS.
>
> What causes these bad dahdi_test values?
>
> P.S. there is only few calls load at anytime on this server.

Does Amazon cloud services guarantee you some level of performance?  Do they say that if you run top you will get a
100% accurate view of compute resource usage?  Your program is running on a particular server in that cloud... it
would seem to me that something might be slowing that server down, and if so it's not easy to debug because you can't
physically touch the server.  For example it could be interesting to disconnect the server's network cable and run
dahdi_test again, but you can't do that remotely.

Maybe there is a simple "timing measurement" utility that you can run, and then show the results to Amazon, and then
ask them to fix so results are acceptable.  Something basic, less complex than Asterisk that Amazon tech support would
agree "yes if that doesn't work then it must be our problem".

-Jeff

> On Wed, Apr 21, 2010 at 8:03 PM, Carlos Chavez <cursor at telecomabmex.com>wrote:
>
>> On Wed, 2010-04-21 at 19:36 -0400, bruce bruce wrote:
>> > Here are result of dahdi_test:
>> >
>> >
>> > [root at ip-10-251-123-3 ~]# dahdi_test
>> > Opened pseudo dahdi interface, measuring accuracy...
>> > 99.725% 96.018% 99.532% 91.934% 99.923% 99.923% 99.628% 99.434%
>> > -434.763% 99.239% 93.770% 99.141% 99.822% 91.232% 99.727% 93.770%
>> > 99.726% -403.227% 98.069% 98.458% 95.136% 98.749% 91.229% 87.622%
>> > 98.554% 93.282% -407.620% 94.650% 96.308% 98.750% 96.993% 93.478%
>> > 94.063% 93.381% 61.745% -379.400% 99.628% 99.921% 99.142% 96.797%
>> > 98.457% 99.337% 87.909% 95.141% -396.880% 99.531% 99.923% 99.921%
>> > 91.035% 96.408% 91.916% 90.255% -402.153% 81.079% 74.534% 96.212%
>> >
>> >
>> > What can one tell from these?
>> >
>>         Only that your timing source sucks.  You need 99.9% or higher if
>> you
>> want a stable system.  I have servers with dahdi_dummy that never go
>> below 99.7% accuracy.  You really need to check your timing source.
>>
>> --
>> Telecomunicaciones Abiertas de México S.A. de C.V.
>> Carlos Chávez Prats
>> Director de Tecnología
>> +52-55-91169161 ext 2001