Maintained by: NLnet Labs

Actual performance considerations for multi-core systems

Eugene Prokopiev
Wed Mar 23 13:18:48 CET 2016


Are optimization hints from actual for
linux system with 16 cores? I'm using now:

so-rcvbuf: 4M
so-sndbuf: 4M
msg-cache-size: 128M
rrset-cache-size: 256M
msg-cache-slabs: 65536
rrset-cache-slabs: 65536
key-cache-slabs: 65536
infra-cache-slabs: 65536
outgoing-range: 8192
num-queries-per-thread: 4096

Are such setting optimal? How to propertly calculate outgoing-range
and num-queries-per-thread with libevent?

Is it possible to know if cache size settings are enough or it must be

Eugene Prokopiev