BIND 9.3.2 on FreeBSD 6.1 out of control

[bert hubert]

On Mon, Jan 08, 2007 at 11:02:05AM +1100, Mark Andrews wrote:
> 	When the cache hits it's max size it trigger's a cleaning
> 	pass which randomly removes 25% of the RRset's in the cache
> 	as well as cleaning those that have expired.  That will
> 	take some cpu usage.
>  
> 	At some point it would be nice to make the overmemory removal
> 	be LRU based rather than random.

I can tell from first hand experience that that works very well, much
advised.

PowerDNS doesn't go all the way, but simply shifts a cache entry to the back
of the 'to delete queue' whenever it is accessed.

	Bert

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