At Mon, 25 Aug 2008 10:04:43 -0400,
Steve Snyder <swsnyder@snydernet.net> wrote:
>
> This is a snippet of my stats output for BIND v9.3.4:
>
> +++ Statistics Dump +++ (1219647723)
> success 15541
> referral 0
> nxrrset 1316
> nxdomain 1317
> recursion 18661
> failure 110
>
> These numbers leave me scratching my a bit.
>
> Shouldn't caching of look-ups always leave the "recursion" value being
> less than the number of look-ups? (Unless every domain resolved is
> unique, of course.)

If your named is multi-threaded, it's possible because incrementing
statistics counters is not thread safe (which is fixed in 9.5 - for
most hardware architectures).

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.