Hi Jurijs,

You have also DefaultLimitNOFILE in systemd that could be different of the values you see in console: https://www.freedesktop.org/software/systemd/man/systemd-system.conf.html

You should test to put LimitNOFILE in systemd unit file, just to be sure.

BTW, we had also some strange behaviors with TCP, Kamailio 5.0 and Debian Stretch.
But with the Kamailio 4.4 integrated in Debian repository, it seems OK for now.

Regards.

--
Ludovic Gasc (GMLudo)
Lead Developer Architect at ALLOcloud

2017-09-28 10:51 GMT+02:00 Jurijs Ivolga <jurijs.ivolga@gmail.com>:
Hi,

There no limits set...

core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 514946
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1048576
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

With kind regards,

Jurijs

On Thu, Sep 28, 2017 at 11:40 AM, Sergey Safarov <s.safarov@gmail.com> wrote:
Try adjust LimitNOFILE on systemd unit
If this will help then create ticker and i will create PR
Example

чт, 28 сент. 2017 г. в 8:51, Jurijs Ivolga <jurijs.ivolga@gmail.com>:
Hi Guys,

I recently tried to use Debian Stretch in production and it didn't went well. On load(500k-700k SIP messages per day) I get a problem that at some point there was a pike of CLOSE_WAIT connections(up to 2k of CLOSE_WAIT connections) and no new connections was possible, I tried to figure out where problem is, but I didn't found anything in system or Kamailio logs, Kamailio just stopped to receive traffic via TCP, but UDP continued to work. Test environment where was no load I didn't faced such issue.

Just curious is there anybody who are using Debian Stretch in production without issues?

Jurijs
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