Hi Alex,
That is clear. I decreased the max worker processes to 20 to be on the safe
side. But what is confusing me is what about the 18 worker processes ran by
Kamailio, will they overlap with postgres processes or they are the same ,
knowing that Kamailio role in my case is just getting routing decision by
running a query on the database and send it back to the SBC. Excuse my lack of
knowledge in how linux processes work.
Regards,
Ali Taher
-----Original Message-----
From: sr-users <sr-users-boun...@lists.kamailio.org> On Behalf Of Alex Balashov
Sent: Tuesday, September 1, 2020 8:22 PM
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] worker processes
On 2020-09-01 12:08, Ali Taher wrote:
> I noticed that there is 48 database connections established by
> Kamailio
> (16 x 3) , can this cause an issue knowing that maximum worker
> processes is 24 ?
Postgres's ability to serve clients and accommodate queries isn't limited by
the number of max_worker_processes. The default is 8 if this value is unset,
yet any stock PostgreSQL instance can accommodate more than 8 concurrent
connections, clearly. max_worker_processes != max_connections.
As far as the wisdom of setting process limits to equal the number of available
CPU cores ("VCPUs"), there's no absolute answer to that. The general danger
with doing this is just that a particularly expensive or destructive statement
can consume all of the hardware resources, with no safety margins for other
processes, and perhaps not even enough for someone to log in and resolve the
problem. So, the general recommendation is not allow PostgreSQL to consume
every single VCPU or max out any other resource, and that's why most Linux
distributions'
server packages come with these types of settings conservatively tuned.
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
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