Michael,
Thanks for the suggestion of the
UDP buffer size. I pushed it to 8M, but there was no change in the behavior. I
am still getting 20% of the calls fail because of OpenSER not processing the
messages. Some calls are going through, but there are many that take several
re-sends from Asterisk before they get processed by OpenSER.
If there are UDP packet receive
failures, would I still see those packets in my tcpdump output? In my
tests, I see the INVITE requests in my tcpdump log, but they simply never
appear to be handled by OpenSER in a timely manner.
Also, I have been using 1.3.1
for my tests. I did not try to use 1.2.1 yet.
Thanks,
Brian.
From: Michael Young
[mailto:myoung@redmonsters.net]
Sent: Friday, May 23, 2008 8:25 PM
To: users@lists.openser.org
Subject: Re: [OpenSER-Users] Openser not processing requests at rate
being sent to it
Brian -- Have had similar
problems recently.
1.
Run a netstat
–su and see if you are having “packet errors”. This means the
udp buffer is filling up.
2.
Check out the latest
from SVN. A patch recently implemented will honor the rev_dns=no.
3.
Increase the UDP buffer
size (I used this info: http://www.29west.com/docs/THPM/udp-buffer-sizing.html).
Mine is set to 1 Mb right now, and is now able to handle 10 invites per second.
Before making these changes I was dying at 3 per second.
I posted a message earlier this
week, that said that my OpenSER install is not correctly calculating the buffer
size as far as I can tell, but have not gotten a response on that yet.
Performance is still not as good as previous OpenSER versions with this setup
(we have a 1.2.1 server that is running circles around the three 1.3.2
servers). I am using dbaliases to route calls on the 1.3.2 servers, and ENUM on
the 1.2.1 server, but that is the only difference, and I would not expect that
to make this great of a difference.
Michael
From:
users-bounces@lists.openser.org [mailto:users-bounces@lists.openser.org] On
Behalf Of Brian Peters
Sent: Friday, May 23, 2008 1:15 PM
To: users@lists.openser.org
Subject: [OpenSER-Users] Openser not processing requests at rate being
sent to it
I am doing what I thought was a simple volume test that
OpenSER should be able to handle, but the results I am getting so far show it
is not handling the load I’m sending it.
Here is my configuration:
-
OpenSER 1.3.1
-
Simple script that uses OpenSER as a proxy to forward
requests to a carrier. All it does is rewrite the host and port of the R-URI
and relays to the carrier.
-
children=16
-
shared memory set to 1 G. (-m 1000)
-
using transaction module to handle the requests.
-
Sending 10 INVITE requests per second to OpenSER using
Asterisk.
When I do a “tcpdump” trace of the network
traffic to/from OpenSER, it is clear that a large percentage of the
INVITE requests sent to OpenSER were not handled. Asterisk needed to resend the
INVITE requests several times before OpenSER would handle them, and in about
20% of the cases Asterisk terminated the INVITES because it reached the timeout
of 30 seconds without any response.
If I go directly from asterisk to the carrier, this test
works without any issues. I’m not sure what the limitations are of
OpenSER, but this seems like something it should be able to handle.
Any help or information on how to configure OpenSER so it will
work would be appreciated.
Thanks,
Brian.
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