Hello,
this suggestion to increase MAX_BRANCHES_LIMIT is wrong, its value is
constrained to be 32 because of some tm internals which uses a 32 bitmap
for cancelled branches in transactions. Might be used for other things,
this came in my mind without looking at the code. Going over 32 will
require changes in tm module, otherwise it will result in
malfunctioning/crashes.
Also, MAX_BRANCHES_LIMIT alone has no impact in memory usage, that is a
matter of the global parameter max_branches, MAX_BRANCHES_LIMIT is only
used to check that does not exceed it.
Cheers,
Daniel
On 12.12.22 08:14, Henning Westerholt wrote:
Hello,
you are right, the maximum setting is still the compile time value.
The default value for max_branches is 12.
Regarding the increase, the obvious advice applies, just raise it that
much as you need. It will increase memory usage for transaction and
decrease some run-time performance. But if you are not getting
excessive, it should be ok.
Cheers,
Henning
--
Henning Westerholt –
https://skalatan.de/blog/ <https://skalatan.de/blog/>
Kamailio services –
https://gilawa.com <https://gilawa.com/>
*From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of
*Lars Jansson
*Sent:* Sunday, December 11, 2022 8:24 PM
*To:* sr-users(a)lists.kamailio.org
*Subject:* Re: [SR-Users] Increase MAX_BRANCHES_LIMIT
Hi Patrick,
Thanks for your reply. I'm aware of the max_branches parameter in the
config file, but my understanding from trial and error is that the
bounds of the max_branches parameter is set by MAX_BRANCHES_LIMIT in
config.h.
Regards,
Lars
Den 2022-12-10 kl. 14:55, skrev Patrick Karton:
Hello
there is already max_branches parameter you can set in config file.
Le 10 déc. 2022 13:02, Lars Jansson <lars.jansson(a)solstiernan.nu>
<mailto:lars.jansson@solstiernan.nu> a écrit :
Hi,
I am building a configuration script where for some traffic
flows parallel forking will be needed, and in this case I need
to go beyond the default max limit of the max amount of branches.
Apart from this specific case the traffic load that kamailio
will need to handle is very low, let's say just one second
here and there with up to 5 concurrent calls at most.
This limit is as far as I understand set here:
usr/local/src/kamailio-5.6/kamailio/src/core/config.h
And the default limit is:
#define MAX_BRANCHES_LIMIT 32 /*!< limit of
maximum number of branches per transaction */
Here are the questions I have related to this:
1) If I increase the value of this constant in config.h, how
high is it reasonable to set this value and still have a
stable system?
2) If I increase MAX_BRANCHES_LIMIT beyond 32, are there also
other parameters that needs to be changed for the system to be
able to cope, and if so which parameters?
Regards,
Lars
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions
sr-users(a)lists.kamailio.org
Important: keep the mailing list in the recipients, do not reply only to the sender!
Edit mailing list options or unsubscribe:
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions
sr-users(a)lists.kamailio.org
Important: keep the mailing list in the recipients, do not reply only to the sender!
Edit mailing list options or unsubscribe:
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users