[Freeswitch-users] Timing issues in AWS?

[Chris Chen]

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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>
> 
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