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

[Simon Ditner]

1.6.15-32-bec4538~64bit (-32-bec4538 64bit), from the official debian
packages in February.

On Thu, Apr 20, 2017 at 9:54 AM, Brian West <brian at freeswitch.org> wrote:

> 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*
> brian at freeswitch.org
>
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