BIND 9 bad performance Centos 7.5


#1

Centos 7.5 and bind 9.9.4
If there is trafic about 100 query per second namd process consume over 100% of CPU.

12129 named 20 0 1018304 268744 13028 S 104,6 6,9 34:25.25 named

And if I make strace of process there si over 70 % of time to wait for futex.

% time seconds usecs/call calls errors syscall
—— ———– ———– ——— ——— —————-
73.65 8.194262 3279 2499 21 futex

Any idea ?


#2

Sorry. You might have better luck with this question on BIND-users@lists.isc.org. We do regular performance testing of all supported versions of BIND, but 9.9.4 is so old - the entire 9.9 branch is EOL and we would have moved off of 9.9.4 a long time ago.