memory leak or other problem

Andrew Armstrong andrew at
Tue Sep 11 14:40:48 UTC 2007

Yes these servers are currently acting as a caching name server for my 
network as well as hosting zone files for some of my customers. I have 
been looking at the 'max-cache-size' option in the bind docs and I think 
this is sure to be the answer to my problems.

Before I just jump in and set this to something does anybody have any 
tips to help me determine what is a good number?

Andrew Armstrong
Chattanooga Online
andrew at
423-267-8867 Ext. 303
fax: 423-648-2808

Florian Weimer wrote:
> * Andrew Armstrong:
>> I have a strange problem with my bind servers where the process runs 
>> great until the memory usage gets very high. I am running CentOS 4.5 and 
>> the latest version of Bind for that distribution bind-9.2.4-24. On one 
>> of my servers there is not enough RAM in the system and about every 24 
>> hours I have to restart the bind server. After I restart everything runs 
>> great until I get to about 80% memory usage.
> Are your servers acting as caching resolvers?  In this case, you
> probably need to configure a size limit for the cache.
> There's no limit by default because it is impossible to get it right
> for all configurations.

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