Performance Issue for bind-9.4.2-P2 at Linux

[BroBind BroBind]

Any help?
Regards,

Dennis

On Wed, Sep 17, 2008 at 6:12 PM, BroBind BroBind <brobind at gmail.com> wrote:

> Hi to all,
>
> We upgraded our Caching-Publishing DNS servers from bind-9.2 to
> bind-9.4.2-P2  at our 4 IBM x346 2 Core CPU 2.80GHz  RHEL4-U3 x86_64 and
> 16GB Mem.  But we had experienced problems w/ it with too many open files
> problem. We resolved it by increasing the FD_SETSIZE at
> /usr/include/bits/typesizes.h and defining the
> STD_CDEFINES="-DISC_SOCKET_FDSETSIZE=4096" during compilation. Here's our
> configure options:
>
> STD_CDEFINES="-DISC_SOCKET_FDSETSIZE=4096" ./configure
> --prefix=/var/bind/v9.4.2-P2
> --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu
> --target=x86_64-redhat-linux-gnu \
> --with-libtool --enable-threads --enable-ipv6 --with-pic --with-openssl=yes
> --enable-largefile \
> --disable-openssl-version-check
>
> Using iptraf, we're having total rates of around 20Mbps of traffic per
> server.  named.stats.txt showed that failure is very high and recursions
> compare w/ success. CPU utilization averages at 40-60 per server and memory
> rise to 20 to 50 % Utilization. We've seen many SERVFAIL from our tcpdumps
> going to legitimate domains and about 3-5 times dig to a domain before the
> queries became sucessful.
>
> Is this CPU and Memory issue and do we need to upgrade our Boxes or its
> bind(named) limitation?
>
>  We would like to seek your support and recommendation for our setup.
>
>
> Regards,
>
> Dennis
>
>