[SR-Users] R: 4.4.4 CPU 100%

[Tomas Zanet]

Hello, I found the issue which was due to a misconfiguration of kamalio.
I forgot to set open_files_limit value which was set to default values 1024, not enough for our installation.
Increasing it, now everything works fine.

Maybe this could help anyone who use TLS connections.

BR.

T.



Tomas Zanet
R&D Software designer
tzanet at came.com
CAME S.p.A.

-----Messaggio originale-----
Da: sr-users [mailto:sr-users-bounces at lists.kamailio.org] Per conto di Tomas Zanet
Inviato: venerdì 15 dicembre 2017 15:11
A: Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org>
Oggetto: [SR-Users] 4.4.4 CPU 100%

Hi all, I’ve been using Kamailio 4.4.4 for 8 months without any problems but in recent days, I’m having some issues with our server and, when it happens, it cannot get new registrations.
Using top I saw a kamailio process is eating all CPU.

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
 1556 kamailio  20   0 1010884  27624  24520 R  98.5  1.4 150:07.59 kamailio

I got backtrace attaching to Kamailio with gdb. Here is the backtrace:

#0  0x00007fb996992d6d in accept () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000005f3615 in handle_new_connect (si=0x7fb9960b4fa8) at tcp_main.c:3894
#2  0x00000000005f7029 in handle_io (fm=0x7fb9961da520, ev=1, idx=-1) at tcp_main.c:4199
#3  0x00000000005c68b2 in io_wait_loop_epoll (h=0xa1fdc0 <io_h>, t=5, repeat=0) at io_wait.h:1065
#4  0x00000000005fa04a in tcp_main_loop () at tcp_main.c:4490
#5  0x00000000004b48ba in main_loop () at main.c:1712
#6  0x00000000004bad12 in main (argc=13, argv=0x7ffd14247c18) at main.c:2631
(gdb) bt

At the moment I found the issue, there were 862 sip client registered correctly.
Our server is configured to use only TLS and mysql as backend.

/usr/local/sbin/kamailio -v
version: kamailio 4.4.4 (x86_64/linux) 852c47
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 852c47
compiled on 15:56:18 Dec 15 2016 with gcc 4.8.4

Can anyone address me to find out why this happens?

Many thanks,
T.


Tomas Zanet
R&D Software designer
tzanet at came.com
CAME S.p.A.

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