[asterisk-users] Defunct / zombie AGI after some execution time

[Mark]

Hello,

We are running Asterisk-1.0.12 in a CentOS 4-4.2 system, kernel
2.6.9-42.0.3.ELsmp.

We have some custom AGI, and when we launch Asterisk the system works fine.

But **after some time**, each AGI execution generates a zombie <defunct> process.

We believe that it's not a problem in the AGI code, because Asterisk+AGI is
working fine in the first "n" minutes/hours. This is a pstree sample:

init-+-asterisk---asterisk---48*[asterisk]

But after some execution time, this is the pstree output:

init-+-asterisk---asterisk-+-28*[asterisk]
     |                     |-asterisk-+-21*[xxxxxxxxx.agi]
     |                     |          `-40*[xxxxxxxxx.agi]
     |                     |-5*[asterisk-+-yyyyyyyyy.agi]
     |                     |             |-zzzzzzzzz.agi]
(...)

Each agi is a defunct process. It dies when the call (parent) finishes.

When the first zombie appears, then ALL next AGI launched from Asterisk
generates a zombie.

We have tested some improvements to solve the problem, with no success:

- Upgrade from RedHat 8 to Centos 3.x
- Upgrade from Centos 3.x to Centos 4.x
- LD_ASSUME_KERNEL=2.4.1
- ulimit -n 65535
- Upgrade from asterisk 1.0.7 to 1.0.12

Currenly we can not easily migrate from asterisk-1.0.x to 1.2.x

Any ideas?. Could be Debian a solution?

Thank you.