2009/11/25 Gareth Hopkins <gabbawp at gmail.com>: > Hi, > > I am deploying a couple of unbound hosts on FreeBSD 7.2 Stable and was > wondering if there are any OS tweaks you would recommend to get the best > performance. Will be doing around 10000 qps at peak times. Hi, You should watch for full socket buffers: # netstat -s -p udp and increase them if you see drops: # sysctl kern.ipc.maxsockbuf=1048576 # /usr/local/etc/rc.d/unbound restart btw in unbound 1.4.0 (it's already in ports) you can specify: so-rcvbuf: 4m Also if you are using firewall, watch for number of state table entries and lower udp.* timeouts for incoming queries and outgoing recursion rules. -- Artis Caune Everything should be made as simple as possible, but not simpler.