Hi all,
We've been running Unbound in production for some months now.
Currently, I have 1.3.1 runing, getting ready to update to 1.3.3. We
have three server in prod, each with one unbound running (2 thread each)
in a zone. When we removed one server, we've started to have some
problems. When I decided to stop one more server, leaving only one
running, we had major dns problems. We have a lot of systems, we're
doing web serving...
Here is how I compile unbound on Solaris 10 x86 5/09 with Sun Studio 12u1...
export CC=cc
./configure \
--prefix=/opt/unbound \
--libexecdir=/opt/unbound/lib \
--sysconfdir=/var/unbound/etc \
--sharedstatedir=/var/unbound \
--localstatedir=/var/unbound \
--with-conf-file=/var/unbound/etc/unbound.conf \
--with-run-dir=/var/unbound \
--with-chroot-dir=/var/unbound \
--with-pidfile=/var/unbound/run/unbound.pid \
--with-username=nobody \
--without-pthreads \
--without-solaris-threads \
--with-ldns=../ldns-1.6.1
As per the unbound optimize page says. So basically, I'm using the
Forked operation...
The systems I have are Sun X4100 with a dual opteron :
# psrinfo -pv
The physical processor has 1 virtual processor (0)
x86 (AuthenticAMD family 15 model 37 step 1 clock 2792 MHz)
AMD Opteron(tm) Processor 254
The physical processor has 1 virtual processor (1)
x86 (AuthenticAMD family 15 model 37 step 1 clock 2792 MHz)
AMD Opteron(tm) Processor 254
and
# prtconf
System Configuration: Sun Microsystems i86pc
Memory size: 8064 Megabytes
So the question. What would be the optimal setup/configuration ?
This is currently what I'm using.
do-ip6: no
hide-identity: yes
hide-version: yes
infra-cache-slabs: 2
interface: 0.0.0.0
key-cache-slabs: 2
msg-cache-size: 256m
msg-cache-slabs: 2
num-queries-per-thread: 950
num-threads: 2
outgoing-range: 950
rrset-cache-size: 512m
statistics-interval: 3600
verbosity: 1
access-control: 0.0.0.0/0 refuse
access-control: 10.0.0.0/8 allow
access-control: 127.0.0.0/8 allow
access-control: 172.16.0.0/14 allow
access-control: 192.168.0.0/16 allow
Base on what I understand, each of my Unbound server can serve 2x950
request each at the same time, right ?
Each of my dns servers are only running Unbound and nsd, ther are strip
down. How can I increase drastically the number of request one server
can process ?
The systems are mostly idle... and almost 4 Gb of ram is never being used.
Thank's.
--
Simon-Bernard Drolet, SPecialiste X Inc., 514.247.6741.
SBDrolet<at>gmail(dot)com, Sun Solaris Contractor
Certified Sun Technical Instructor, Sun Certified System Admin (2.5,7,8,9,10),
Network Admin (2.5,7,8,9,10) and Security Admin for Solaris 9 and 10.
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