[OpenSIPS-Users] auto scaling

[Slava Bendersky]

Hello Bogdan, 
My question how to calculate correctly 


tcp_workers 
udp_workers 


to properly assign with in auto scaling profile. Which parameters need use as base ? 


As example if vm 4GB memory up what will be max number for scale up processes and what should be value for tcp and udp workers. 
It message is appear in log on first attempt to fork in scale up. 


volga629 

----- Original Message -----

From: "Bogdan-Andrei Iancu" <bogdan at opensips.org> 
To: "OpenSIPS users mailling list" <users at lists.opensips.org>, "Slava Bendersky" <volga629 at networklab.ca> 
Sent: Monday, March 11, 2019 4:44:57 AM 
Subject: Re: [OpenSIPS-Users] auto scaling 

Hi Slava, 

Based on the OpenSIPS logs, did you get that error on the first forking attempt or sometime later after some number of new tcp processes forking ? More or less, my question is : what was the process creation/termination history before getting that bug log ? 

Also I just pushed a small commit to improve the date provided by the bug log. 

In regards to the "not clear how to calculate"...could you be specific ? 

Best regards, 
Bogdan-Andrei Iancu

OpenSIPS Founder and Developer https://www.opensips-solutions.com OpenSIPS Summit 2019 https://www.opensips.org/events/Summit-2019Amsterdam/ 
On 03/10/2019 05:12 PM, Slava Bendersky wrote: 



Hello Everyone, 
Trying test auto scaling feature with following config 



auto_scaling_profile = PRF_SIP 
scale up to 24 on 70% for 4 cycles within 5 
scale down to 4 on 20% for 8 cycles 


On box 4096 Mb memory and 4 virtual CPU 


Getting in log 


CRITICAL:core:fork_dynamic_tcp_process: #012>>> trying to fork one more TCP worker but no free slots in the TCP table#012#012It seems you have hit a programming bug.#012Please help us make OpenSIPS better by reporting it at https://github.com/OpenSIPS/opensips/issues 




Not clear how to calculate workers for tcp or udp 


tcp_workers=10 use_auto_scaling_profile PRF_SIP 
listen=udp:lan_ip:5060 use_auto_scaling_profile PRF_SIP 





[root at vprx00 ~]# opensips -V 
version: opensips 3.0.0-dev (x86_64/linux) 
flags: STATS: On, SHM_EXTRA_STATS, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, QM_MALLOC, DBG_MALLOC, FAST_LOCK-ADAPTIVE_WAIT 
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535 
poll method support: poll, epoll, sigio_rt, select. 
main.c compiled on 10:06:47 Mar 7 2019 with gcc 8 




volga629 

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