[Freeswitch-users] Timing issues in AWS?

[Michael Picher]

m1.large

I have a c1.xlarge queued up and ready to test...

On Wed, Nov 16, 2011 at 11:52 AM, Chris Chen <chris.chen2004 at gmail.com>wrote:

> Just a simple question, what kind of AWS instance are you running your
> FreeSWITCH?
> It makes huge difference.
> Thanks,
> Chris
>
> On Wed, Nov 16, 2011 at 10:43 AM, Michael Picher <mpicher at gmail.com>wrote:
>
>> Hi guys,
>>
>> Trying to get to the bottom of some conference bridge issues I'm having
>> with running the system in AWS.
>>
>> We're hearing a bunch of snap-crackle-pops in conference bridges and when
>> I tcpdum on the server itself I see them in the RTP and see RTP timestamp
>> problems.
>>
>> I've run the following:
>>
>>
>> timer_test
>> freeswitch at 127.0.0.1@internal> timer_test 120 10
>>
>> Avg: 120.004ms Total Time: 1200.315ms
>>
>> 2011-11-16 10:25:56.121131 [CONSOLE] mod_commands.c:461 Timer Test:
>> samplecount after init: 1
>> freeswitch at 127.0.0.1@internal> 2011-11-16 10:25:56.219163 [CONSOLE]
>> mod_commands.c:466 Timer Test: samplecount after first step: 2
>> 2011-11-16 10:25:56.339195 [CONSOLE] mod_commands.c:475 Timer Test: 1
>> sleep 120 120006
>> 2011-11-16 10:25:56.459259 [CONSOLE] mod_commands.c:475 Timer Test: 2
>> sleep 120 120040
>> 2011-11-16 10:25:56.579259 [CONSOLE] mod_commands.c:475 Timer Test: 3
>> sleep 120 119976
>> 2011-11-16 10:25:56.699291 [CONSOLE] mod_commands.c:475 Timer Test: 4
>> sleep 120 120007
>> 2011-11-16 10:25:56.819318 [CONSOLE] mod_commands.c:475 Timer Test: 5
>> sleep 120 120001
>> 2011-11-16 10:25:56.939375 [CONSOLE] mod_commands.c:475 Timer Test: 6
>> sleep 120 120031
>> 2011-11-16 10:25:57.059397 [CONSOLE] mod_commands.c:475 Timer Test: 7
>> sleep 120 119996
>> 2011-11-16 10:25:57.179422 [CONSOLE] mod_commands.c:475 Timer Test: 8
>> sleep 120 119994
>> 2011-11-16 10:25:57.299461 [CONSOLE] mod_commands.c:475 Timer Test: 9
>> sleep 120 120005
>> 2011-11-16 10:25:57.419478 [CONSOLE] mod_commands.c:475 Timer Test: 10
>> sleep 120 119991
>>
>> test_time
>> freeswitch at 127.0.0.1@internal> time_test 600 10
>>
>> test 1 sleep 600 1592
>> test 2 sleep 600 986
>> test 3 sleep 600 1018
>> test 4 sleep 600 980
>> test 5 sleep 600 1005
>> test 6 sleep 600 1000
>> test 7 sleep 600 972
>> test 8 sleep 600 990
>> test 9 sleep 600 1006
>> test 10 sleep 600 994
>> avg 1054
>>
>> For kernel:
>> [root at openuc bin]# uname -r
>>
>> 2.6.21.7-2.fc8xen
>>
>> CONFIG_HZ:
>> [root at openuc bin]# grep CONFIG_HZ /boot/config-*
>>
>> /boot/config-2.6.16.33-xenU-x86_64:CONFIG_HZ_100=y
>> /boot/config-2.6.16.33-xenU-x86_64:# CONFIG_HZ_250 is not set
>> /boot/config-2.6.16.33-xenU-x86_64:# CONFIG_HZ_1000 is not set
>> /boot/config-2.6.16.33-xenU-x86_64:CONFIG_HZ=100
>> /boot/config-2.6.18-164.15.1.el5.centos.plus:# CONFIG_HZ_100 is not set
>> /boot/config-2.6.18-164.15.1.el5.centos.plus:# CONFIG_HZ_250 is not set
>> /boot/config-2.6.18-164.15.1.el5.centos.plus:CONFIG_HZ_1000=y
>> /boot/config-2.6.18-164.15.1.el5.centos.plus:CONFIG_HZ=1000
>> /boot/config-2.6.21-2952.fc8xen:# CONFIG_HZ_100 is not set
>> /boot/config-2.6.21-2952.fc8xen:# CONFIG_HZ_250 is not set
>> /boot/config-2.6.21-2952.fc8xen:# CONFIG_HZ_300 is not set
>> /boot/config-2.6.21-2952.fc8xen:CONFIG_HZ_1000=y
>> /boot/config-2.6.21-2952.fc8xen:CONFIG_HZ=1000
>>
>> are the xenU kernel settings screwing me here?
>>
>> Thanks,
>>   Mike
>>
>>
>> --
>> There are 10 kinds of people in this world, those who understand binary
>> and those who don't.
>>
>> mpicher at gmail.com
>> blog: http://www.sipxecs.info
>> call: sip:mpicher at sipxecs.info
>>
>> _________________________________________________________________________
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>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
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>


-- 
There are 10 kinds of people in this world, those who understand binary and
those who don't.

mpicher at gmail.com
blog: http://www.sipxecs.info
call: sip:mpicher at sipxecs.info
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