Hello,
We have conducted some tests on systems using Astlinux 0.7.0 and we
found that the limit for open files is set to 1024 (probably the default
kernel value).
pbx load_tests # ulimit -n
1024
Because we had a machine which could process more than 130 calls
simultaneously we have reached to that limit:
pbx load_tests # asterisk -rx "show channels" | grep "active calls"
0
pbx load_tests # ls -l /proc/$(cat
/var/run/asterisk/asterisk.pid)/fd/ | wc -l
23
asterisk -rx "show channels" | grep "active calls"
130 active calls
pbx load_tests # ls -l /proc/$(cat
/var/run/asterisk/asterisk.pid)/fd/ | wc -l
1063
Each call is a SIP call between 2 extensions defined on the same
Asterisk server and the relation found between calls and open files is:
8 new open files at each new call
Each leg have one RX and one TX flow and each flow open 2 files (one
pipe and one stream) and this is how we explained the value found above
2 legs x 2 flows x 2 files = 8 open files per call
Thus we have modified the script which start asterisk
(/etc/init.d/asterisk) with the following configuration:
ulimit -n 4096
and from that point our tests have not been affected by the errors
reported in the asterisk CLI.
Do you think is OK if you could add this configuration into the trunk
(or at least 2048) - or maybe the proposed change is considered
inappropriately?
Best regards,
Ioan Indreias
------------------
if [ -r /etc/asterisk/extensions.conf ]; then
# Work around uclibc bug
ulimit -s unlimited
# Patch for open files error
ulimit -n 4096
asterisk -p -I
------------------
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