Trouble which bind8 chaching-only DNS.

[Dimitrij Hilt]

On Wed, Sep 08, 2004 at 08:59:31AM -0400, Barry Margolin wrote:
> In article <chmu5u$2220$1 at sf1.isc.org>,
>  Dimitrij Hilt <dimitrij at schlund.de> wrote:
> 
> > Hi,
> > 
> > we have a problem with bind8 ( 8.3.3-REL ) as caching-only DNS.
> > Bind runs a lot of time perfekt ( 399-600 queries/sec ), but then
> > needs bind
> > +suddenly 99% CCU time and becomes very slow.
> > 
> > I cann not see where this problem is. With strace i can see that named
> > runs.
> > After restart is bind8 Ok.
> > 
> > Does someone have the same problems?
> 
> Do you have enough RAM?  BIND gets very slow if it can't keep the entire 
> cache in main memory.  Use "ps" and make sure the RSS is close to the SZ 
> column.
Jes. I think this machine has enough RAM:
nscache:~# free
             total       used       free     shared    buffers  cached
Mem:       1033148     997732      35416          0       6680  357572
-/+ buffers/cache:     633480     399668
Swap:      2048276       8704    2039572

nscache:~# ps -u named -Fw

UID        PID  PPID  C    SZ  RSS PSR STIME TTY          TIME   CMD
named    15124     1 12 144598 520980 1 Sep07 ?       03:23:40   /usr/sbin/named -u named

nscache:~#

Dimitrij Hilt