[asterisk-users] How to increase the calls per second limit ?

[Olivier]

Hello,

As an exercice, I installed sipp on the same box as a Asterisk 11.4
instance (to keep network equipements out of the equation).

I'm focusing on the maximum number of new calls this Asterisk instance can
deal with.

Here is the dialplan (AEL) I'm playing with:
    _X. => {
        Verbose(0,Incoming call from ${CALLERID(num)} to ${EXTEN} in
${CONTEXT} - case A);
        Answer();
        MusicOnHold(default,20);
        HangUp();
    };


For now, I'm repeatedly hitting a 35 cps limit (with a small 4% failure
rate, all of them occuring at the end of a 200 calls wave).

When this occurred for the first time, I could read a "Too many open file"
error while sipp calls failed. At that time, ulimit and stack wre
respectively set to 2048 and 8192.

Then I increased those settings to 32768 (from 2048) and 2048 (unchanged).

Now I'm still hitting the same 35 cps limit but Asterisk displays :
res_musiconhold.c:343 ast_moh_files_next: Unable to open file
'/var/lib/asterisk/moh/reno_project-system': No such file or directory

As you may guess, the above file exists so I suppose I'm hitting another
limit but I can't find it.

Suggestions ?

Regards
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