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Call Recording to Hard Drive


centricall
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Hello,

 

We use SnomOne Blue 4.2.1.4025 (Win64) for one of our customer. This is 35-agent call center that daily average total number of calls is 7000-8000. SnomOne run on Windows Server 2008 R2 x64 and 16 GB ram.

 

Our customer complains that sometimes there are audio cut and jitter on every call for a while. We looked log file but not helpful. We set CPU 2 for only snom process. Other processes do not use this core. Its average CPU usage is %65 at peak time.

 

Is it possible that call recording to the hard drive is not fast enough that slow downs the snom process so that audio processing breaks down?

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Our customer complains that sometimes there are audio cut and jitter on every call for a while. We looked log file but not helpful. We set CPU 2 for only snom process. Other processes do not use this core. Its average CPU usage is %65 at peak time.

 

Is it possible that call recording to the hard drive is not fast enough that slow downs the snom process so that audio processing breaks down?

 

65 % is a lot. The PBX always runs on one core, otherwise you would a lot of jitter when the OS shifts it from one core to another.

 

Recording does take it's toll. Saving to the harddrive can slow down the fetching of files in toto; the result would be that the prompts are played back with a delay, but once that they are in memory they are played continuously.

 

Options

  • Use a faster server
  • Turn the compression off for the recordings. That will occupy more space for the recordings in the beginning; however if you can use a small script that grabs the files and then actually compresses it in MP3 format (not sure though how to do this on Windows) this would become a feature
  • Make sure that the hard drive does not take additional CPU horse power (e.g. flash access).
  • Check if you are using G.711 codec. If you are using other codecs like G.729A, GSM, even G.726 they also consume CPU horse power
  • SRTP also takes its toll. Not sure if you want to turn this off and this is a totally trusted environment.

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