[79901] in North American Network Operators' Group
Re: Memory leak cause of Comcast DNS problems
daemon@ATHENA.MIT.EDU (Eric A. Hall)
Sun Apr 17 23:22:23 2005
Date: Sun, 17 Apr 2005 23:20:05 -0400
From: "Eric A. Hall" <ehall@ehsco.com>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: Sean Donelan <sean@donelan.com>, nanog@merit.edu
In-Reply-To: <87vf6l1i54.fsf@deneb.enyo.de>
Errors-To: owner-nanog@merit.edu
On 4/17/2005 12:29 PM, Florian Weimer wrote:
> * Sean Donelan:
>
>>Perhaps your DNS software also has a memory leak? Anyone know which
>>software Comcast was using? Should other ISPs be concerned they might
>>have the same latent problem in their systems?
>
> Probably yes, especially if they don't read documentation of their DNS
> software.
>
> | The maximum amount of memory to use for the server's cache, in
> | bytes. [...] The default is unlimited, meaning that records are
> | purged from the cache only when their TTLs expire.
That was my first guess too.
Most DNS servers don't even have this switch.
--
Eric A. Hall http://www.ehsco.com/
Internet Core Protocols http://www.oreilly.com/catalog/coreprot/
