dnsperf and BIND memory consumption

[ivan jr sy]

Hi

can you verify if you're using the newly installed named.

did you configure your options to replace the base?

can you give us:

ldd /usr/sbin/named
ldd /usr/local/sbin/named

to my understanding, there should be no memory leak issue at all if you disable threads..

this post has always been directed to the concern of FreeBSD + amd64 platform + FreeBSD port dns/bind95 (BIND 9.5.0-P2) + threading enabled

thanks!

--- On Wed, 12/10/08, Dmitry Rybin <kirgudu at corbina.net> wrote:

> From: Dmitry Rybin <kirgudu at corbina.net>
> Subject: Re: dnsperf and BIND memory consumption
> To: "Vinny Abello" <vinny at tellurian.com>
> Cc: "JINMEI Tatuya / 神明達哉" <Jinmei_Tatuya at isc.org>, "dougb at FreeBSD.org" <dougb at FreeBSD.org>, "bind-users at isc.org" <bind-users at isc.org>
> Date: Wednesday, December 10, 2008, 4:05 AM
> Hello!
> 
> I test patch, add to bind95/Makefile
> .if (${ARCH} == "amd64")
> ARCH=           x86_64
> .endif
> 
> work/bind-9.5.0-P2/config.log
> uname -m = amd64
> /usr/bin/uname -p = amd64
> Target: amd64-undermydesk-freebsd
> Configured with: FreeBSD/amd64 system compiler
> ISC_ARCH_DIR='x86_32'
> build='x86_64-portbld-freebsd7.0'
> build_alias='x86_64-portbld-freebsd7.0'
> build_cpu='x86_64'
> host='x86_64-portbld-freebsd7.0'
> host_cpu='x86_64'
> 
> I didn't find any affect, memory leak very quickly with
> threads support,
> and slowly without threads.
> 
> FreeBSD xxx 7.0-STABLE FreeBSD 7.0-STABLE #0: Wed Jul  2
> 14:18:35 MSD
> 2008     xxx at xxx:/usr/obj/usr/src/sys/H1  amd64
> 
> 
> Vinny Abello 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?
> 
> 
> -- 
> Рыбин Дмитрий
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