[Samba] SMB data transfer performance on AD mode

[Jeremy Allison]

On Wed, Sep 13, 2017 at 06:45:19PM +0200, Emmanuel Florac wrote:
> Le Wed, 13 Sep 2017 06:53:56 +1200
> Andrew Bartlett via samba <samba at lists.samba.org> écrivait:
> 
> > > 
> > > There are a multitude of possible problems :-).  
> > 
> > However, the first problem is that on the AD DC, smb signing is
> > required, which will make things slower than unprotected rsync.
> > 
> 
> Yep, exactly the thing that drove me mad this summer :) If server
> signing is on, it will significantly reduce thoughput....

When 4.7.0 ships, if you're on a supported Intel x86_64
or AMD alternative, re-compiling with the hardware AES
instructions turned on should really help here.