Too many open files .. just curious..

[etirado.ext at orange-ftgroup.com]

Hello,

I'm testing BIND 9.4.2-P1.

BIND is running on a RedHat 4.6 with kernel 2.6 , chrooted :
/prog/named/sbin/named -n 8 -u dns -t /prog/named -c /etc/named.conf

I wanted to test if I'll encounter "Too many open files" error in
production so I put this little conf in BIND :

max-ncache-ttl 15;
max-cache-ttl 10;
max-cache-size 200M;

So this way , I thought BIND will be recursing almost every time with
~approx 25 000 queries/sec.

rndc status reports approx 10% of queries/sec for recursive clients. (
this is enough for this test ).

ls -l /proc/$(pidof named)/fd | wc -l  = ~1000

And yes.. I got the "named[8864]: socket: too many open file
descriptors"

So I tried to mod the value in /etc/security/limits.conf :

dns     soft    nofile  4096
dns     hard    nofile  8192

ulimit -Sn = 4096 & ulimit -Hn = 8192 for everyone.

So anyone know what's the problem please?


Thank you.

Regards,


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