29 Nov
2013
29 Nov
'13
3:37 p.m.
Hi Andrew
A very simple place to start -- have you tried upping the memory
allocations in /etc/default/kamailio to see if it fixes the issues? We had
some issues with shared memory that went away when we changed around these
settings.
All the best.
Will Ferrer
On Fri, Nov 29, 2013 at 11:30 AM, <elactrum(a)jamailca.com> wrote:
Hi,
I have a Kamailio 3.3.3 server that currently reports the following errors
upon execution of t_relay() for certain initial INVITEs.
daemon.err /usr/sbin/kamailio[26916]: ERROR: <core> [sip_msg_clone.c:505]:
ERROR: sip_msg_cloner: cannot allocate memory
daemon.err /usr/sbin/kamailio[26916]: ERROR: tm [t_lookup.c:1338]: ERROR:
new_t: out of mem:
daemon.err /usr/sbin/kamailio[26917]: ERROR: tm [t_lookup.c:1478]: ERROR:
t_newtran: new_t failed
I understand this error to be related to shared memory, based on [1].
However, sercmd reports normal shared memory utilization:
# sercmd core.shmmem
{
total: 67108864
free: 43189728
used: 20505784
real_used: 23919136
max_used: 65948568
fragments: 36887
}
These figures are quite similar to another server with the same
configuration and Kamailio version, which is not reporting out-of-memory
errors.
# sercmd core.shmmem
{
total: 67108864
free: 40219536
used: 23241952
real_used: 26889328
max_used: 66306288
fragments: 37832
}
I recently saw similar symptoms on a Kamailio 4.0.4 server, but Kamailio
unfortunately crashed before I could get further details. In this case, I
can consistently duplicate the problem with certain INVITEs. It seems that
the failure is somehow related to the size of the SIP headers. For example,
I have an INVITE from a Polycom phone which t_relay() routes successfully
with 741 bytes of headers (total SIP length 1039 bytes). However, it seems
that if I add one character to any of its SIP headers (742 bytes of
headers; total SIP length 1039 bytes) the t_relay() will consistently fail.
This binary doesn't have DBG_QM_MALLOC configured (I am working on getting
it re-compiled). However, since I don't know what caused the problem, I
would still like to get as much information as I can out of the running
system. I have attached the output of mi_statistics, as well as
mem_dump_pkg for the external UDP receivers and the ctl handler. Are there
any other diagnostics that could be useful?
-Andrew
[1] http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:faq#qwhat_
does_errorsip_msg_clonercannot_allocate_memory_
and_errornew_tout_of_memmean_and_how_do_i_fix_them
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