[Freeswitch-users] Recording Duration on EC2

Byron Clark byron at theclarkfamily.name
Thu Aug 29 04:11:27 MSD 2013 

On Wed, Aug 28, 2013 at 3:00 PM, Gabriel Gunderson <gabe at gundy.org> wrote:

> On Mon, Aug 26, 2013 at 11:36 AM, Byron Clark <byron at theclarkfamily.name>
> wrote:
> > I'm using FreeSWITCH on EC2 to call into a conference bridge and record
> the
> > audio from the conference. It works well except for one thing: the
> recording
> > contains all the audio from the call, but the duration of the file is
> > shorter than the call. The duration is typically 3-5 seconds shorter than
> > the call for each 5 minutes of call. On a recent test, wall clock showed
> a
> > duration of 15:32.93 but the duration of the recording file was 15:19.96.
> > The ugly part is that this only happens on EC2 instances where there is
> some
> > CPU steal time (<5%) occurring.
>
> Byron, do you see this in a regular bridge too? Or, is it only in a
> conf. room? I know it would be hard to get, but do you know how long
> the *actual* call was? Can you get back into the logs and see when
> those events happen and give a time based on syslog?
>

Thanks, Gabe. I'm seeing this on any call I originate on the problematic
instances. Here are the things I've tried, to no avail, in order to improve
these results:
- Kernel CONFIG_HZ set to 1000 (Ubuntu 12.04 default on EC2 is 250)
- Using mod_timerfd


Here are the results of a recent test I ran where the recorded file was six
seconds short after about four minutes.

Command
---------------
freeswitch at internal> originate {record_waste_resources=true}sofia/external/
sip:music at iptel.org &record(/tmp/record1.wav) default default
+OK e223c3e0-103d-11e3-aeea-0779ec213503

I used uuid_kill to terminate the call after 00:03:57.

Duration of the resulting file
----------------------------------------
Input #0, wav, from '/tmp/record1.wav':
  Duration: 00:03:51.84, bitrate: 128 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, 1
channels, s16, 128 kb/s

FreeSWITCH Console Output
-------------------------------------------
2013-08-28 23:59:32.417082 [DEBUG] switch_ivr_originate.c:2060 Parsing
global variables
2013-08-28 23:59:32.417082 [DEBUG] switch_event.c:1617 Parsing variable
[record_waste_resources]=[true]
2013-08-28 23:59:32.417082 [NOTICE] switch_channel.c:1030 New Channel
sofia/external/sip:music at iptel.org [e223c3e0-103d-11e3-aeea-0779ec213503]
2013-08-28 23:59:32.417082 [DEBUG] mod_sofia.c:5189 (sofia/external/
sip:music at iptel.org) State Change CS_NEW -> CS_INIT
2013-08-28 23:59:32.417082 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_INIT
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:454
(sofia/external/sip:music at iptel.org) State INIT
2013-08-28 23:59:32.417082 [DEBUG] mod_sofia.c:87 sofia/external/
sip:music at iptel.org SOFIA INIT
2013-08-28 23:59:32.417082 [DEBUG] sofia_glue.c:2677 Local SDP:
v=0
o=FreeSWITCH 1377707312 1377707313 IN IP4 10.151.108.236
s=FreeSWITCH
c=IN IP4 10.151.108.236
t=0 0
m=audio 27060 RTP/AVP 0 8 101 13
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv

2013-08-28 23:59:32.417082 [DEBUG] switch_core_session.c:999 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.417082 [DEBUG] mod_sofia.c:127 (sofia/external/
sip:music at iptel.org) State Change CS_INIT -> CS_ROUTING
2013-08-28 23:59:32.417082 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:454
(sofia/external/sip:music at iptel.org) State INIT going to sleep
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_ROUTING
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:470
(sofia/external/sip:music at iptel.org) State ROUTING
2013-08-28 23:59:32.417082 [DEBUG] mod_sofia.c:150 sofia/external/
sip:music at iptel.org SOFIA ROUTING
2013-08-28 23:59:32.417082 [DEBUG] switch_ivr_originate.c:67
(sofia/external/sip:music at iptel.org) State Change CS_ROUTING ->
CS_CONSUME_MEDIA
2013-08-28 23:59:32.417082 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:470
(sofia/external/sip:music at iptel.org) State ROUTING going to sleep
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_CONSUME_MEDIA
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:489
(sofia/external/sip:music at iptel.org) State CONSUME_MEDIA
2013-08-28 23:59:32.417082 [DEBUG] switch_core_state_machine.c:489
(sofia/external/sip:music at iptel.org) State CONSUME_MEDIA going to sleep
2013-08-28 23:59:32.417082 [DEBUG] sofia.c:5720 Channel sofia/external/
sip:music at iptel.org entering state [calling][0]
2013-08-28 23:59:32.917126 [DEBUG] switch_core_session.c:999 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.917126 [DEBUG] switch_core_session.c:999 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.917126 [DEBUG] sofia.c:5720 Channel sofia/external/
sip:music at iptel.org entering state [completing][200]
2013-08-28 23:59:32.917126 [DEBUG] sofia.c:5733 Remote SDP:
v=0
o=- 308297691 1827516553 IN IP4 217.9.36.145
s=-
c=IN IP4 217.9.36.145
t=0 0
m=audio 37892 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=direction:both

2013-08-28 23:59:32.917126 [DEBUG] switch_core_session.c:999 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.917126 [DEBUG] switch_core_session.c:999 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.917126 [DEBUG] sofia.c:5720 Channel sofia/external/
sip:music at iptel.org entering state [ready][200]
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:5181 Audio Codec Compare
[PCMU:0:8000:20:64000]/[PCMU:0:8000:20:64000]
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:3124 Set Codec
sofia/external/sip:music at iptel.org PCMU/8000 20 ms 160 samples 64000 bits
2013-08-28 23:59:32.917126 [DEBUG] switch_core_codec.c:111 sofia/external/
sip:music at iptel.org Original read codec set to PCMU:0
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:5303 Set 2833 dtmf send
payload to 101
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:3383 AUDIO RTP
[sofia/external/sip:music at iptel.org] 10.151.108.236 port 27060 ->
217.9.36.145 port 37892 codec: 0 ms: 20
2013-08-28 23:59:32.917126 [DEBUG] switch_rtp.c:1985 Starting timer [soft]
160 bytes per 20ms
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:3647 Set 2833 dtmf send
payload to 101
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:3653 Set 2833 dtmf receive
payload to 101
2013-08-28 23:59:32.917126 [DEBUG] sofia_glue.c:3680 sofia/external/
sip:music at iptel.org Set rtp dtmf delay to 40
2013-08-28 23:59:32.917126 [NOTICE] sofia.c:6476 Channel [sofia/external/
sip:music at iptel.org] has been answered
2013-08-28 23:59:32.917126 [DEBUG] switch_channel.c:3576 (sofia/external/
sip:music at iptel.org) Callstate Change DOWN -> ACTIVE
2013-08-28 23:59:32.937082 [DEBUG] switch_ivr_originate.c:3494 Originate
Resulted in Success: [sofia/external/sip:music at iptel.org]
2013-08-28 23:59:32.937082 [INFO] switch_channel.c:2973 sofia/external/
sip:music at iptel.org Flipping CID from "" <0000000000> to "Outbound Call"
<music>
2013-08-28 23:59:32.937082 [DEBUG] mod_commands.c:4088 (sofia/external/
sip:music at iptel.org) State Change CS_CONSUME_MEDIA -> CS_EXECUTE
2013-08-28 23:59:32.937082 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-28 23:59:32.937082 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_EXECUTE
2013-08-28 23:59:32.937082 [DEBUG] switch_core_state_machine.c:477
(sofia/external/sip:music at iptel.org) State EXECUTE
2013-08-28 23:59:32.937082 [DEBUG] mod_sofia.c:243 sofia/external/
sip:music at iptel.org SOFIA EXECUTE
2013-08-28 23:59:32.937082 [DEBUG] switch_core_state_machine.c:209
sofia/external/sip:music at iptel.org Standard EXECUTE
EXECUTE sofia/external/sip:music at iptel.org record(/tmp/record1.wav)
2013-08-28 23:59:32.937082 [DEBUG] switch_ivr_play_say.c:475 Raw Codec
Activated, ready to waste resources!
2013-08-28 23:59:32.937082 [DEBUG] switch_ivr_play_say.c:599 Raw Codec
Activated
2013-08-28 23:59:32.937082 [DEBUG] switch_core_codec.c:219 sofia/external/
sip:music at iptel.org Push codec L16:70
2013-08-28 23:59:33.077079 [DEBUG] switch_rtp.c:3706 Correct ip/port
confirmed.
2013-08-29 00:03:29.537080 [NOTICE] switch_ivr.c:3675 Hangup sofia/external/
sip:music at iptel.org [CS_EXECUTE] [NORMAL_CLEARING]
2013-08-29 00:03:29.537080 [DEBUG] switch_channel.c:3130 Send signal
sofia/external/sip:music at iptel.org [KILL]
2013-08-29 00:03:29.537080 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-29 00:03:29.557080 [DEBUG] switch_core_codec.c:244 sofia/external/
sip:music at iptel.org Restore previous codec PCMU:0.
2013-08-29 00:03:29.557080 [DEBUG] switch_core_session.c:2740
sofia/external/sip:music at iptel.org skip receive message
[APPLICATION_EXEC_COMPLETE] (channel is hungup already)
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:477
(sofia/external/sip:music at iptel.org) State EXECUTE going to sleep
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_HANGUP
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:678
(sofia/external/sip:music at iptel.org) State HANGUP
2013-08-29 00:03:29.557080 [DEBUG] mod_sofia.c:504 Channel sofia/external/
sip:music at iptel.org hanging up, cause: NORMAL_CLEARING
2013-08-29 00:03:29.557080 [DEBUG] mod_sofia.c:556 Sending BYE to
sofia/external/sip:music at iptel.org
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:48
sofia/external/sip:music at iptel.org Standard HANGUP, cause: NORMAL_CLEARING
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:678
(sofia/external/sip:music at iptel.org) State HANGUP going to sleep
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:689
(sofia/external/sip:music at iptel.org) Callstate Change ACTIVE -> HANGUP
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:446
(sofia/external/sip:music at iptel.org) State Change CS_HANGUP -> CS_REPORTING
2013-08-29 00:03:29.557080 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:415
(sofia/external/sip:music at iptel.org) Running State Change CS_REPORTING
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:761
(sofia/external/sip:music at iptel.org) State REPORTING
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:92
sofia/external/sip:music at iptel.org Standard REPORTING, cause:
NORMAL_CLEARING
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:761
(sofia/external/sip:music at iptel.org) State REPORTING going to sleep
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:440
(sofia/external/sip:music at iptel.org) State Change CS_REPORTING -> CS_DESTROY
2013-08-29 00:03:29.557080 [DEBUG] switch_core_session.c:1334 Send signal
sofia/external/sip:music at iptel.org [BREAK]
2013-08-29 00:03:29.557080 [DEBUG] switch_core_session.c:1542 Session 6
(sofia/external/sip:music at iptel.org) Locked, Waiting on external entities
2013-08-29 00:03:29.557080 [NOTICE] switch_core_session.c:1560 Session 6
(sofia/external/sip:music at iptel.org) Ended
2013-08-29 00:03:29.557080 [NOTICE] switch_core_session.c:1564 Close
Channel sofia/external/sip:music at iptel.org [CS_DESTROY]
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:565
(sofia/external/sip:music at iptel.org) Callstate Change HANGUP -> DOWN
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:568
(sofia/external/sip:music at iptel.org) Running State Change CS_DESTROY
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:578
(sofia/external/sip:music at iptel.org) State DESTROY
2013-08-29 00:03:29.557080 [DEBUG] mod_sofia.c:397 sofia/external/
sip:music at iptel.org SOFIA DESTROY
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:99
sofia/external/sip:music at iptel.org Standard DESTROY
2013-08-29 00:03:29.557080 [DEBUG] switch_core_state_machine.c:578
(sofia/external/sip:music at iptel.org) State DESTROY going to sleep
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