samba - Jun 2014 - Win2K8 as DC in a samba4 environment

Good morning.

At this moment we run a samba4 domain with five linux DC under 4.1.7 
version. However, due to some poor designed apps our LDAP is suffering a 
lot of querys that raises CPU at 100% for minutes. Performance is poor 
and we think that a native Windows native DC would not suffer this 
problem due to a better index management and/or optimization at LDAP 
service.

So, the question is, is it possible having a Win2K8 as a DC controller 
in a samba4 environment? Is safe? Has anybody experienced with this 
scenario?

-- 
I?igo Martinez Lasala
Vector Ignite
Parque Empresarial Cerro de Los Gamos
Camino del Cerro de los Gamos, 1, Edificio 6, Planta 1
28224 Pozuelo de Alarc?n - Madrid
www.vector-itcgroup.com

On Wed, 2014-06-25 at 19:30 +0200, I?igo Martinez Lasala
wrote:
> Good morning.
> 
> At this moment we run a samba4 domain with five linux DC under 4.1.7 
> version. However, due to some poor designed apps our LDAP is suffering a 
> lot of querys that raises CPU at 100% for minutes. Performance is poor 
> and we think that a native Windows native DC would not suffer this 
> problem due to a better index management and/or optimization at LDAP 
> service.
> 
> So, the question is, is it possible having a Win2K8 as a DC controller 
> in a samba4 environment? Is safe? Has anybody experienced with this 
> scenario?
That should work fine, but it would be very worthwhile working out what
calls are slow and why, so we can fix that as well.  

I can provide suggestions on how to get us the information we need if
you wish to take that approach.  Essentially it involves (against a
debug build of samba) using the linux 'perf' tools in -g mode, eg perf
record -g and perf report -g.

The only issue will be if workstations connect to the windows server,
and look for sysvol, unless you work out a way to replicate that. 

Andrew Bartlett

-- 
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba