[Freeswitch-users] Jitter and dropping MOS score

[Jurijs Ivolga]

Hi,

I can not tell you about everybody, but usually when I get this problem 99%
of the time the issue is on the provider side. I would try to reproduce
this issue by myself and capture pcap files and analyze those.

With kind regards,

Jurijs


On Wed, Oct 6, 2021 at 7:43 PM John Hardiman <
john.hardiman at missionlabs.co.uk> wrote:

> Hi Christoph,
>
> For the CPU part: On linux boxes if a process in top goes over 100% or top
> shows >1.0 in load, this means that more than one core is occupied. Since
> you have 16 cores this is fine as you are using 1/16 of your CPU for the
> FreeSWITCH process. So 200% would be 2 cores fully used etc, etc.
>
> For the Jitter part/dropping MoS, we might need a bit more info, like
> times or patterns that is happens or even what the MoS drops by and how
> much jitter is seen. I personally use SNGrep and a combination of
> Homer/VoIPMonitor to get all of the stuff I need.
>
> Accurate monitoring will point you in the right direction if there is an
> issue (Homer 7 is free and really good as a side note)
>
> Thanks,
>
> John.
>
> -----Original Message-----
> From: Christoph Russow <russow at emtex.de>
> Sent: 05 October 2021 10:34
> To: freeswitch-users at lists.freeswitch.org
> Subject: [Freeswitch-users] Jitter and dropping MOS score
>
> Hi all,
>
> we are currently experiencing jitter and dropping MOS score on an
> increasing amount of calls on our system.
>
> i can't see any increased load on our system (neither CPU nor I/O wise).
>
> Current stats:
>
> ~ 15Mbit/s network traffic (on a 1Gbit/s network) load average: 1,10,
> 0,82, 0,91 (16 core machine) memory used: 2,26GB/16GB
>
> freeswitch at lc1> status
> UP 0 years, 12 days, 13 hours, 30 minutes, 24 seconds, 649 milliseconds,
> 831 microseconds
> FreeSWITCH (Version 1.10.1 -release-12-f9990221e6 64bit) is ready
> 137634 session(s) since startup
> 218 session(s) - peak 245, last 5min 222
> 1 session(s) per Sec out of max 30, peak 8, last 5min 2
> 1000 session(s) max
> min idle cpu 0.00/95.37
> Current Stack Size/Max 244K/244K
>
> System ist not virtualized.
>
> the only "strange" thing i see is the freeswitch "main"process that
> consumes (according to htop) >=100% cpu (see attached screenshot).
> Can this be the problem? if yes what can i do against it.
>
> if not what are possible bottlenecks i should weed out?
>
> if you need any additional informations to help me sort out this problem
> please don't hesitate to ask.
>
> Thanks in advance and best regards
> Christoph
>
>
>
> --
> ________________________________________________________________
>
> EMTEX GmbH
> Christoph Russow
> Software Engineer
>
> Bischof-Otto-Weg 9
> D-91086 Aurachtal
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