3 May
2018
3 May
'18
7:48 a.m.
Hey Alex,
Thanks for the insight. I remember reading your article before and it was super helpful. I
think we disabled all of the heavy database operations, but I will double check.
We are building the RURI using the cfg_rpc module, so we aren’t hitting a database. We
have a failure route that causes another RURI to be created, which sends the call to a
Freeswitch server to play a message.
Let me know if you see any issue with this, I will double check the database calls to be
safe.
Sent from my iPhone
On May 2, 2018, at 11:36 PM, Alex Balashov
<abalashov(a)evaristesys.com> wrote:
Hi Mack,
What sort of end-to-end delays are you seeing, from receipt of request
until immediately before t_relay()?
You can profile this with the benchmark module:
https://kamailio.org/docs/modules/5.1.x/modules/benchmark.html
Or my preferred method, the hard way:
# At the practical start of request processing.
$avp(proc_start) = $TV(Sn);
# At the end, right before calling t_relay() or forward().
$var(cur_time) = $TV(Sn);
$var(proc_diff) = (
(((
$(var(cur_time){s.select,0,.}{s.int}) -
$(avp(proc_start){s.select,0,.}{s.int})
) * 1000000)
+
(
$(var(cur_time){s.select,1,.}{s.int}) -
$(avp(proc_start){s.select,1,.}{s.int})
) / 1000) mod 1000
);
xlog("L_INFO", "[R-MAIN:$ci] -> Request processing delay:
$var(proc_diff) ms\n"););
Also, for general background on this topic, you might consider my
article on the subject of Kamailio performance characteristics:
http://blog.csrpswitch.com/tuning-kamailio-for-high-throughput-and-performa…
If I had to guess, shooting from the hip, you've got some really slow
database queries somewhere.
-- Alex
On Wed, May 02, 2018 at 06:19:00PM -0400, Mack
Hendricks wrote:
Hey All,
We are load testing Kamailio 4.2.3 and we are seeing the waiting within the transaction
manager increasing. I’ve increased the children from 8 to 16 to 24, but we are still
seeing a large amount of waiting. I don’t see an errors in the logs. Can anyone give me
a clue on where to look.
05-02-18_03:07:38 PM
tm.stats
{
current: 390
waiting: 226
total: 2361
total_local: 0
replied_locally: 1406
6xx: 0
5xx: 0
4xx: 88
3xx: 0
2xx: 3180
created: 2361
freed: 1971
delayed_free: 0
}
Mack Hendricks / Head of Support / dOpenSource
web: http://dopensource.com <http://dopensource.com/>
support: +888-907-2085
dSIPRouter <http://dsiprouter.org/> - GUI focused on implementing Kamailio to
provide SIP Trunking and PBX Hosting Services
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--
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/