On 7/28/2011 12:09 PM, Chris Lewis wrote:
I'd not use dnscache in corporate/enterprise/high reliability environments. Unbound is nice and hiccup-free. Bind9 is reasonable enough. I hear good things about PowerDNS too.
As a FYI, on a machine running qpsmtpd, handling up to 10M emails per day, with 4-5 DNSBL queries per email, rDNS etc., Unbound has been running since Feb (probably a manual restart testing unbound's init script, we've never had ANY issue with Unbound itself), and has consumed about 27 hours of CPU, and has a memory footprint of 45Mb.
Could probably up the cache size, but I don't think it would make a lot of difference.
rbldnsd has been up for 300 days, has consumed about the same amount of CPU, and the memory footprint is 900Mb. Which, no surprise, is about the size of the zone file it serves.
