The unknown here is what Revision of FreeSWITCH is this from?

On Tue, Apr 18, 2017 at 9:00 PM, Simon Ditner <spditner+freeswitch@gmail.com> wrote:

I'm having a bit of trouble interpreting the jitter_ related data that I am getting out of XML CDR's in an attempt to measure how well a system is performing.

For example, I place a G.711 call over a private LAN between two idle systems using PCMU, the originator being static in a continuous loop, and the destination being "echo", with jitterbuffer_ms=60:200:20

At the 'echo' end, I examine the call-stats section of the XML CDR (below), and I am not sure what to make of the jitter_ values -- for example max_variance of 7076.55, and a loss_rate of 116.67 -- as I haven't been able to determine from the source code thus far what they are measuring, and what units they are working in.

Any pointers would be appreciated.

Cheers,

Simon

----

  <call-stats>

    <audio>

      <inbound>

        <raw_bytes>817744</raw_bytes>

        <media_bytes>817744</media_bytes>

        <packet_count>4772</packet_count>

        <media_packet_count>4772</media_packet_count>

        <skip_packet_count>51</skip_packet_count>

        <jitter_packet_count>4774</jitter_packet_count>

        <dtmf_packet_count>0</dtmf_packet_count>

        <cng_packet_count>0</cng_packet_count>

        <flush_packet_count>0</flush_packet_count>

        <largest_jb_size>0</largest_jb_size>

        <jitter_min_variance>0.10</jitter_min_variance>

        <jitter_max_variance>7076.55</jitter_max_variance>

        <jitter_loss_rate>116.67</jitter_loss_rate>

        <jitter_burst_rate>115.67</jitter_burst_rate>

        <mean_interval>20.06</mean_interval>

        <flaw_total>0</flaw_total>

        <quality_percentage>100.00</quality_percentage>

        <mos>4.50</mos>

      </inbound>

      <outbound>

        <raw_bytes>812700</raw_bytes>

        <media_bytes>812700</media_bytes>

        <packet_count>4725</packet_count>

        <media_packet_count>4725</media_packet_count>

        <skip_packet_count>0</skip_packet_count>

        <dtmf_packet_count>0</dtmf_packet_count>

        <cng_packet_count>0</cng_packet_count>

        <rtcp_packet_count>0</rtcp_packet_count>

        <rtcp_octet_count>0</rtcp_octet_count>

      </outbound>

      <error-log>

        <error-period>

          <start>1492563921959035</start>

          <stop>1492563927519075</stop>

          <flaws>511194</flaws>

          <consecutive-flaws>0</consecutive-flaws>

          <duration-msec>5560</duration-msec>

        </error-period>

      </error-log>

    </audio>

  </call-stats>

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_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
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http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
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