[Pdns-users] Virtual servers in pdns-recursor

[sthaug at nethelp.no]

> 10 instances ??
> Im experimenting with 4 recursor instances because I have plenty of cpu and
> ram:
> 
> top - 16:20:08 up 8 days,  7:36,  3 users,  load average: 0.06, 0.05, 0.05
> Tasks: 383 total,   1 running, 382 sleeping,   0 stopped,   0 zombie
> Cpu(s):  5.5%us,  2.5%sy,  0.0%ni, 91.4%id,  0.1%wa,  0.0%hi,  0.6%si,
>  0.0%st
> Mem:  32867864k total,  4847800k used, 28020064k free,   149300k buffers
> Swap: 16506872k total,        0k used, 16506872k free,  1395864k cached
> 
> 
> dnsdist is reporting around 1200 qps at peak hours, should i benefit with
> more simultaneous instances? if so, how many? Im starting to beleive this
> server is oversized for the dns traffic our customers are demanding, what
> do you think?

Quite possibly - you can do *much* higher numbers with only one pdns
recursor instance.

Steinar Haug, AS 2116