[Freeswitch-users] Tuning Up Freeswitch

[Madovsky]

for info I'm using the old Fedora10 64bits
and everything is working fine with fq at 1000hz


----- Original Message ----- 
From: "Ariel Monaco" <arielmonaco at flylabs.com>
To: "FreeSWITCH Users Help" <freeswitch-users at lists.freeswitch.org>
Sent: Tuesday, April 26, 2011 8:24 PM
Subject: Re: [Freeswitch-users] Tuning Up Freeswitch


We had high CPU utilization peaks in the past, which lead to some audio 
issues (clipping). We were using debian at that time, which was a 
customer-side requirement.

I'm not a kernel guru but I remember this had something to do with kernel 
timer cycles and the issue was address by adding "divider=10" or 
"divider=100" as a kernel's boot loader option.

My 2 cents,
Ariel

On Apr 21, 2011, at 13:24 , Antonio Teixeira wrote:

> Hello List.
>
> I'm currently integrating an IVR in python together with freeswitch using 
> mod_python and ESL and my life has been well until ...
> The flow of calls went over 80 simultaneous calls.
> Now freeswitch starts sending packets with huge delays ( even when 
> establishing the call , mainly the 200 ) and firing up the IVR with tons 
> of delay up to 20 seconds.
>
> So i searched the wiki forums and mailing list:
>
> Put freeswitch on a diet , trimmed modules.conf
> Played with the ulimit stuff.
> Played with the IVRS to reduce load to a minimum and i was able to squeeze 
> more 5 calls of performance.
>
> The problem is :
>
> Top shows
> top - 16:14:33 up 35 days,  8:15,  3 users,  load average: 1.92, 1.76, 
> 1.78
> Tasks: 133 total,   1 running, 132 sleeping,   0 stopped,   0 zombie
> Cpu(s):  1.4%us,  3.3%sy,  0.0%ni, 94.6%id,  0.0%wa,  0.3%hi,  0.5%si, 
> 0.0%st
> Mem:   8193336k total,  1639156k used,  6554180k free,   177208k buffers
> Swap: 19534904k total,        0k used, 19534904k free,  1062272k cached
>
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 31361 yadayada      20   0  716m 164m 9628 S   73  2.1 155:17.85 
> freeswitch
>
> Freeswitch goes up to 150 % and puff there goes the MOS down to 0.
>
>
> Some basic System Info :
> Debian 6.0 ( i heard the timming module is affected by Debian , but if the 
> CPU % gets lower than 95% everything will be more stable)
> Python 2.5
>
> 2 x Intel(R) Xeon(R) CPU           E5506  @ 2.13GHz
> 8 GB of Ram
>
> as you can see 94 % of the "Cpu Power" is sleeping :\
>
>
> It appears freeswitch is only capable of using let's say "one cpu"/thread 
> ??
> Do you guys recommend simply starting more instances or redoing the IVR 
> stuff.
>
>
> Hope you guys can help me out.
>
> Thanks
> António Teixeira
>
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Ariel Monaco – Systems Engineer
Flylabs - Open Source Telecommunications and  IT Consultants

Address: Potosí 4456 C1199ACP - Buenos Aires - Argentina
Web: http://flylabs.com
E-Mail: arielmonaco at flylabs.com
Tel. +54 (11) 4982-2689, +1 (315) 688-7333


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