dnsperf and BIND memory consumption

[Vinny Abello]

> -----Original Message-----
> From: JINMEI Tatuya / 神明達哉 [mailto:Jinmei_Tatuya at isc.org]
> Sent: Friday, November 28, 2008 4:09 AM
> To: ivan_jr at yahoo.com
> Cc: dougb at FreeBSD.org; Vinny Abello; bind-users at isc.org
> Subject: Re: dnsperf and BIND memory consumption
> 
> At Thu, 27 Nov 2008 23:35:30 -0800 (PST),
> ivan jr sy <ivan_jr at yahoo.com> wrote:
> 
> > so does this memory leak only occur if
> > @ISC_ARCH_DIR@ is "noatomic" under FreeBSD amd64?
> > and not when its "x86_32" ?
> 
> First off, note that I have no explicit evidence of memory leak.  But
> *if there is indeed leak in the FreeBSD pthread library*, the key is
> "noatomic".  With this configuration named will call pthread
> locks/unlocks much, much heavier, so the problem may be observable
> more clearly.  named still uses pthread locks Even with x86_32, so it
> may just be leaking memory more slowly.
> 
> Again, everything is just a guess and could be wrong.  We should seek
> advice from someone who knows FreeBSD library well.

Just out of curiosity, why in theory is this not seen in prior versions of BIND such as 9.4.2-P2 or 9.4.3 on the same FreeBSD 7.0 AMD64 platforms with threading enabled in BIND?

-Vinny