[Asterisk-Users] 191st simultaneous call fails

[Nick Bachmann]

Nick Bachmann wrote:

> Jim Gottlieb wrote:
>
>> I've been testing both T400P and TE405P boards and I'm running into
>> some kind of hard limit on the number of simultaneous calls.  This is
>> on x86 with 2 Athlon MP 2800+ CPUs running Fedora Core 1.
>>
>> Everything is fine up to 190 channels, but the 191st call fails every
>> time with errors like:
>>
>> Dec 14 15:44:00 WARNING[1215]: Unable to start PBX on Zap/201-1
>> Dec 14 15:44:00 WARNING[1215]: Failed to create update thread!
>> Dec 14 15:44:00 WARNING[1215]: Unable to start PBX on channel 0/9, 
>> span 9
>> Dec 14 15:44:00 WARNING[1215]: Call specified, but not found?
>> Dec 14 15:44:00 WARNING[1215]: Hangup on bad channel 0/9 on span 9
>>
>> It's not tied to which channel the call comes in on.  It's some
>> resource that's exhausted after 190 calls.  A limit on threads?
>>  
>>
> Try http://people.redhat.com/alikins/tuning_utils/thread-limit.c and 
> see what happens.

Also, have a look at the PPT on http://www.astertest.com/  They included 
some tweaks they used to increase call volume.

Good luck, and please report your findings back to the ML & Wiki!

Nick