Maintained by: NLnet Labs

[Unbound-users] 100% CPU Usage with prefetch-key: yes?

Günter Grodotzki
Sat Jul 24 13:36:37 CEST 2010

Hi all,

# unbound -h
Version 1.4.5
linked libs: event 1.4.14b-stable, ldns 1.6.5, OpenSSL 0.9.8g 19 Oct 2007
linked modules: validator iterator
BSD licensed, see LICENSE in source package for details.
Report bugs to unbound-bugs at

I activated prefetch and prefetch-key today and I got high cpu usage on 
the unbound process.

Since deactivating prefetch-key, I don't seem to have the problem anymore.

There have been no higher q/s rates, so I am guessing this is no flood 

Anybody experiencing similar?