Am I confused about stats output?

[JINMEI Tatuya / 神明達哉]

At Mon, 25 Aug 2008 10:04:43 -0400,
Steve Snyder <swsnyder at 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.