[asterisk-users] Too many open files, asterisk crash

[Alex Balashov]

On Thu, 26 Apr 2007, Knud Müller said something to this effect:

> Tzafrir Cohen wrote:
>
>> On Thu, Apr 26, 2007 at 08:43:17AM -0500, Jason Fuermann wrote:
>> 
>>> 1024 open files will get you around 120 concurrent calls. 
>> 
>> 8 file-handles per call? Why is that?
>>
>> 
> Depends on what channel type you use and what you do in the dialplan. A 
> file handle is also used for an open socket. I always ran into that kind 
> of problem when conferencing and play soundfiles to the conference 
> members. Try before starting asterisk to ulimit your shell to a higher 
> value of file handles. AFAIK its ulimit -n.

   Some aspects of the limit on concurrent file descriptors are still on 
the kernel side, unfortunately, depending on what you're doing with them.
For instance, if any kind of asynchronous polling of descriptors is done
with select(), know that FD_SETSIZE is hard-coded into the kernel headers.

   If it's a simple issue of open files, there should be no problem 
increasing it on the ulimit side.  But more complex operations involving
concurrent use of descriptors and sockets may require changes to hard-coded 
parameters.

-- Alex

--
Alex Balashov <sasha at presidium.org>