nanog mailing list archives
Re: Memory leak cause of Comcast DNS problems
From: Florian Weimer <fw () deneb enyo de>
Date: Sun, 17 Apr 2005 18:29:27 +0200
* 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. The number of complaints I've heard that "DNS resolvers eat *so* much memory" suggests that few people tweak the default configuration. 8-( However, it's unlikely that this was the cause of Comcast's problems because DNS cache overflows would have an impact on a much larger scale.
Current thread:
- Memory leak cause of Comcast DNS problems Sean Donelan (Apr 16)
- Re: Memory leak cause of Comcast DNS problems Florian Weimer (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Eric A. Hall (Apr 17)
- Re: Memory leak cause of Comcast DNS problems David Conrad (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Eric A. Hall (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Eric A. Hall (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Eric Brunner-Williams in Portland Maine (Apr 18)
- <Possible follow-ups>
- Re: Memory leak cause of Comcast DNS problems Fergie (Paul Ferguson) (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Florian Weimer (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Fergie (Paul Ferguson) (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Steven M. Bellovin (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Martin J. Levy (Apr 17)
- Re: Memory leak cause of Comcast DNS problems Daniel Golding (Apr 18)
- Re: Memory leak cause of Comcast DNS problems Steven M. Bellovin (Apr 17)
(Thread continues...)
- Re: Memory leak cause of Comcast DNS problems Florian Weimer (Apr 17)