[Freeswitch-users] Understanding XML CDR's <call-stats>

[Brian West]

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

On Tue, Apr 18, 2017 at 9:00 PM, Simon Ditner <spditner+freeswitch at 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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-- 

*Brian West*
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