[Freeswitch-users] mod_lua Too many open files

[António Silva]

hi,

After a few weeks running fs without issues, i got the error "Too many 
open files", i understand that i reach the limit of allowed open files 
in the system. But it must be trigger for some "zombie fds" opened..


Is there a way to get the "zombie" fds open by fs?


I use lua scripts to check db mapping, so in every script i make sure to 
call dbh:release() before returning.
I also use esl sockets to check FS events.

in the running process i have the following limits:

cat /proc/10975/limits

Limit                     Soft Limit           Hard Limit Units
Max cpu time              unlimited            unlimited seconds
Max file size             unlimited            unlimited bytes
Max data size             unlimited            unlimited bytes
Max stack size            245760               8388608 bytes
Max core file size        unlimited            unlimited bytes
Max resident set          unlimited            unlimited bytes
Max processes             unlimited            unlimited processes
Max open files            999999               999999 files
Max locked memory         65536                65536 bytes
Max address space         unlimited            unlimited bytes
Max file locks            unlimited            unlimited locks
Max pending signals       128123               128123 signals
Max msgqueue size         819200               819200 bytes
Max nice priority         0                    0
Max realtime priority     unlimited            unlimited
Max realtime timeout      unlimited            unlimited us


currently i see the number of files change:

while :; do echo -n "$(date +'%F %T') "; lsof -p $(cat 
/var/run/freeswitch/freeswitch.pid) | wc -l; sleep 5; done;
2018-01-22 17:20:46 78938
2018-01-22 17:20:53 78920
2018-01-22 17:20:59 78902
2018-01-22 17:21:06 78911
2018-01-22 17:21:12 78883
2018-01-22 17:21:18 78883
2018-01-22 17:21:25 78899
2018-01-22 17:21:31 78913
2018-01-22 17:21:37 78925
2018-01-22 17:21:44 78911
2018-01-22 17:21:50 78913
2018-01-22 17:21:56 78935


I see lot of entries:
COMMAND    PID USER   FD   TYPE             DEVICE  SIZE/OFF NODE NAME
freeswitc 2429 root *257u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *258u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *260u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *261u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *262u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *264u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *265u  0000               0,11         0 10734 
anon_inode
freeswitc 2429 root *266u  0000               0,11         0 10734 
anon_inode


grep "0000" openfiles | wc -l
78951

but I don't understand the output for the TYPE= "0000"...


thanks for the help.

-- 
Saludos / Regards / Cumprimentos
António Silva