Re: rndc flush

> Hello.
> I'm running Bind 9.2.2.
> My understanding is that executing "rndc flush" should clear up the
> cache that Bind has been building up with time.
> When I execute rndc flush, the server's CPU goes to 100% for a couple
> of minutes, but the memory that the process named takes up does not
> come down.
> After named loads in my server, named's footprint is aprox. 15MB.
> After a few days of operation, it goes to aprox. 120MB. Shouldn't the
> amount of memory the process takes come down to aprox. 15MB after
> "rndc flush"?
>
> Thanks for any insight you may give me.
>
> Arie Kachler
>
Memory footprint and memory in use are two different things.

For the footprint to go down you have to release full pages
also depending upon the malloc implementation they may need
to be at the end of the memory map.

Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews@isc.org