[Unbound-users] Unbound on FreeBSD

Gareth Hopkins gabbawp at gmail.com
Wed Nov 25 14:42:33 UTC 2009


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.

Boxes have 4 Gigs Memory and unbound 1.3.4 is being built from ports with
both LIBEVENT and THREADS selected.

unbound.conf is as follows


        # use all CPUs
        num-threads: 2

        # power of 2 close to num-threads
        msg-cache-slabs: 2
        rrset-cache-slabs: 2
        infra-cache-slabs: 2
        key-cache-slabs: 2

        outgoing-range: 4096
        num-queries-per-thread: 4096

        # more cache memory, rrset=msg*2
        rrset-cache-size: 512m
        msg-cache-size: 256m
        verbosity: 1
        statistics-interval: 0
        extended-statistics: yes
        statistics-cumulative: no
        interface: x.x.x.x
        outgoing-interface: x.x.x.x
        port: 53
        do-ip6: no
        access-control: allow_snoop
        access-control: allow_snoop
        chroot: ""
        username: "unbound"
        directory: "/usr/local/etc/unbound"
        logfile: "/var/log/unbound/unbound.log"
        log-time-ascii: yes
        pidfile: "/var/run/unbound.pid"
        root-hints: "/usr/local/etc/unbound/root.servers"
        hide-identity: yes
        hide-version: yes
        harden-glue: yes

# Remote control config section.
        # Enable remote control with unbound-control.
        control-enable: yes

        # what interfaces are listened to for remote control.

Thanks for your time


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