On Tue, 14 May 2013, Boylan, James wrote:
I'm investigating issues with the current syslog server that is running in our
environment. The information I had found was they were running into issues
with the instances reaching a connection limit on the port that resulted in
them running multiple instances.
a connection limit should only be getting hit if they had a LOT of systems
connecting to them. But even that should be an OS/resource issue that requires
having thousands or tens of thousands of connections to a single system.
David Lang
I'm beginning to suspect it had more to do with how the connections were being
managed than a set limit of how many connections were being able to be
supported by the specific fixed port.
Thanks David. Based on the performance I've been seeing with Rsyslog, the fact
that is also uses a fixed port supports my theory.
-- James
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of David Lang
Sent: Tuesday, May 14, 2013 7:31 AM
To: rsyslog-users
Subject: Re: [rsyslog] Does rsyslog use ephemeral ports?
On Tue, 14 May 2013, Boylan, James wrote:
Greetings!
I'm trying to get a better idea on the number of connections a single Rsyslog
server can support. I currently have it running in our pre-production
environment as a smoke test for performance, but I want to check on this prior
to moving it into our production environment.
Does it use ephemeral ports or is it using a static port with a finite amount
of load it can handle?
It uses ephemeral ports as the source for outbound connections, the way just
about everything does.
It uses fixed ports for inbound connections, the way just about everything does.
people have reported rsyslog handling 1M logs/sec, and this is not limited by the network
ports. What are you referring to when you say "a static port with a finite amount of
load it can handle"?
David Lang
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