[asterisk-bugs] [Asterisk 0017655]: Record files with noise and/or audio cutting when using mixmonitor with medium call trafic on Asterisk.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17655 
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Reported By:                aureliors123
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17655
Category:                   Applications/app_mixmonitor
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           Older 1.6.2 - please test a newer version 
JIRA:                       SWP-2059 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-07-15 19:49 CDT
Last Modified:              2010-08-17 17:59 CDT
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Summary:                    Record files with noise and/or audio cutting when
using mixmonitor with medium call trafic on Asterisk.
Description: 
When recording with mixmonitor, all record files gets with noise an cuts on
the audio.
The scenario was:
- Medium call traffic: More than 60 and less than 120 concurrent calls.
- All calls are recorded
- Codec: Alaw
- Record File format: GSM
- Processor load: Never more than 50%
- Asterisk Version: 1.6.1.11
- SO Debian 5.0.3 - 2.6.26-2-686
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 (0126053) aureliors123 (reporter) - 2010-08-17 17:59
 https://issues.asterisk.org/view.php?id=17655#c126053 
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Just added the config files and an scenario png file.
At the file 0101000029023770833.WAV it is possible to realize the
“noise” i talked about. Maybe it can be the same audio drops you
talked.
The problem do not occurred when generate an record file in alaw format,
while recording many calls in GSM format. It seems that it is not I/O
bottleneck.
The files are written directly to an local Sata disk. Not sure about
swapping.
I´ll provide an full time monitoring of this server to be 100% sure about
disk I/O an processor load, but in this particular scenario we have low
traffic (never more than 60 simultaneous calls) using the same hardware we
use to put, in other customers, more than 100 simultaneous calls. However
it is a fact  that the problem gets worse when call traffic is greater. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-08-17 17:59 aureliors123   Note Added: 0126053                          
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