if it really consumes 100% CPU with few calls then it's abnormal.

kill it with SIGABRT (make sure it will dump core before that), get a backtrace with gdb and open a github issue.

before doing this you need to make sure it's really eating 100 % CPU, this screenshot is not very relevant.

Also, you need to make sure you don't have real packet loss. Perhaps it's a matter of dimensioning, eg: how many simultaneous calls do you expect to have on that hardware, what codec, etc.

On Wed, Oct 6, 2021 at 2:26 AM Christoph Russow <russow@emtex.de> wrote:

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@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

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D-91086 Aurachtal
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Tel. +49 9132 7490 0 Sitz der Gesellschaft: 91086 Aurachtal
Fax. +49 9132 7490 900 Amtsgericht Fürth: HRB6804
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