[Freeswitch-users] FreeSWITCH changing max_sessions automatically
jay binks
jaybinks at gmail.com
Sat Mar 29 12:17:20 MSK 2014
Check this out that I just found !
http://forum.openvz.org/index.php?t=msg&th=607&
so my beancounters are not showing any failcnt for privvmpages, but I do
have failcnt on numproc
which is interesting.
- numproc - The maximal number of processes and threads the VE may
create.
increase this limit and see if you can make it happen again.
vzctl set <VZUID> --numproc=6000 --save
On 29 March 2014 19:09, jay binks <jaybinks at gmail.com> wrote:
> Take a look in your FS logs..
> Im pretty sure you will see the whimsical & Awesome log message :
>
>
> *LUKE: I'm hit, but not bad.LUKE'S VOICE: Artoo, see what you can do with
> it. Hang on back there....*
> this is in thread_launch_failure in switch_core_session.c ( around line
> 1714 )
> and around this code you can easily see the following
>
> sess_count = switch_core_session_count();
> if (sess_count > 110) {
> switch_core_session_limit(sess_count - 10);
> as you can see, it bumps 10 off your SPS, every time thread_launch_failure
> is called.
>
> thread_launch_failure is called whenever switch_thread_create fails to
> create a thread.
> which basically means apr_thread_create
>
> I have seen this myself with MUCH lower SPS on openVZ machines, but since
> your seeing it also im now hoping we can nut this out :)
> im going to dig a little more and see what I can find.
>
> what openVZ kernel are you using out of interest ?
> ive seen this on a fairly old, but stable 2.6.32-19-pve
>
> let me know what you find !
>
>
>
>
>
> On 28 March 2014 04:30, Muhammad Naseer Bhatti <nbhatti at gmail.com> wrote:
>
>> Yes, i was thinking on same lines. Its running over OpenVZ kernel.
>> I am now going to try replicate this in a physical env.
>>
>> Sent from my iPad
>>
>> > On Mar 27, 2014, at 9:11 PM, William King <william.king at quentustech.com>
>> wrote:
>> >
>> > Is your FS instance running in a virtual environment?
>> >
>> > William King
>> > Senior Engineer
>> > Quentus Technologies, INC
>> > 1037 NE 65th St Suite 273
>> > Seattle, WA 98115
>> > Main: (877) 211-9337
>> > Office: (206) 388-4772
>> > Cell: (253) 686-5518
>> > william.king at quentustech.com
>> >
>> >> On 03/27/2014 11:07 AM, Muhammad Naseer Bhatti wrote:
>> >> No i am definitely not going to that SPS limit. The peak was set to 400
>> >> so maybe this is just a skewed value. 1000 session does not look to be
>> >> high load. The call is bridged and set to play silence and disconnects
>> >> at random time under 1 minute. The resources on the server also
>> clearly
>> >> seem to be available. I am not gearing this towards a how do i ....
>> >> Performance kind of a thread but could there be something unusual here?
>> >>
>> >> Sent from my iPad
>> >>
>> >> On Mar 27, 2014, at 9:07 PM, Ken Rice <krice at freeswitch.org
>> >> <mailto:krice at freeswitch.org>> wrote:
>> >>
>> >>> Re: [Freeswitch-users] FreeSWITCH changing max_sessions automatically
>> >>> You're hitting a melt down protection... Once it reaches a limit and
>> >>> cant allocate the additional resources for creating anew session it
>> >>> will back down the max sessions limit to help save itself...
>> >>>
>> >>> The PEAK SPS there was a value seen at some point the SPS buffer...
>> >>> Depending on you beating the machine to death it is possible that
>> >>> number got skewed due to a timer miss
>> >>>
>> >>>
>> >>> On 3/27/14 10:57 AM, "Muhammad Bhatti" <nbhatti at gmail.com> wrote:
>> >>>
>> >>>
>> >>> Just have noticed something new today. Testing a local instance on
>> >>> CentOS 6.0 with FreeSWITCH Version 1.2.23~64bit. FreeSWITCH seems
>> >>> to be changing the max_sessions param automatically. This happens
>> >>> when typically I bridge around 1000 sessions and whatever value I
>> >>> set to sps and max_sessions, it comes down.
>> >>>
>> >>> UP 0 years, 0 days, 0 hours, 37 minutes, 54 seconds, 362
>> >>> milliseconds, 294 microseconds
>> >>> FreeSWITCH (Version 1.2.23 64bit) is ready
>> >>> 74716 session(s) since startup
>> >>> *976 session(s) - peak 1022, last 5min 985
>> >>> 112 session(s) per Sec out of max 400, peak 9053, last 5min 317 <-
>> >>> BTW This peak was never tried, not sure why it says 9053
>> >>> 5000 session(s) max
>> >>> min idle cpu 0.00/55.00
>> >>> Current Stack Size/Max 240K/8192K
>> >>>
>> >>> =======
>> >>> followed by
>> >>> =======
>> >>>
>> >>> switch_core_session.c:2288 Over Session Limit! 1013
>> >>> mod_sofia.c:4884 Error Creating Session
>> >>>
>> >>> =======
>> >>> And then
>> >>> =======
>> >>>
>> >>> freeswitch at internal> status
>> >>> UP 0 years, 0 days, 0 hours, 38 minutes, 35 seconds, 372
>> >>> milliseconds, 831 microseconds
>> >>> FreeSWITCH (Version 1.2.23 64bit) is ready
>> >>> 76231 session(s) since startup
>> >>> 560 session(s) - peak 1023, last 5min 1023
>> >>> 0 session(s) per Sec out of max 400, peak 9053, last 5min 317
>> >>> 1013 session(s) max
>> >>> min idle cpu 0.00/99.00
>> >>> Current Stack Size/Max 240K/8192K
>> >>>
>> >>>
>> >>> Is this something changed recently? Or some sort of server
>> >>> meltdown protection mechanism being forked :)
>> >>>
>> >>>
>> >>> *
>> >>>
>> >>> *
>> >>> *--
>> >>> Ken
>> >>> _http://www.FreeSWITCH.org
>> >>> http://www.ClueCon.com
>> >>> http://www.OSTAG.org
>> >>> _irc.freenode.net <http://irc.freenode.net> #freeswitch
>> >>> Twitter: @FreeSWITCH
>> >>>
>> >>>
>> _________________________________________________________________________
>> >>> Professional FreeSWITCH Consulting Services:
>> >>> consulting at freeswitch.org <mailto:consulting at freeswitch.org>
>> >>> http://www.freeswitchsolutions.com
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> Official FreeSWITCH Sites
>> >>> http://www.freeswitch.org
>> >>> http://wiki.freeswitch.org
>> >>> http://www.cluecon.com
>> >>>
>> >>> FreeSWITCH-users mailing list
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>> >>
>> >>
>> >>
>> _________________________________________________________________________
>> >> Professional FreeSWITCH Consulting Services:
>> >> consulting at freeswitch.org
>> >> http://www.freeswitchsolutions.com
>> >>
>> >>
>> >>
>> >>
>> >> Official FreeSWITCH Sites
>> >> http://www.freeswitch.org
>> >> http://wiki.freeswitch.org
>> >> http://www.cluecon.com
>> >>
>> >> FreeSWITCH-users mailing list
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>> >>
>> >
>> >
>> _________________________________________________________________________
>> > Professional FreeSWITCH Consulting Services:
>> > consulting at freeswitch.org
>> > http://www.freeswitchsolutions.com
>> >
>> >
>> >
>> >
>> > Official FreeSWITCH Sites
>> > http://www.freeswitch.org
>> > http://wiki.freeswitch.org
>> > http://www.cluecon.com
>> >
>> > FreeSWITCH-users mailing list
>> > FreeSWITCH-users at lists.freeswitch.org
>> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> > UNSUBSCRIBE:
>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>> > http://www.freeswitch.org
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>>
>>
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://wiki.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
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>>
>
>
>
> --
> Sincerely
>
> Jay
>
--
Sincerely
Jay
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