[Samba] extremely low performance on Samba 4.2.14-Debian

Rowland Penny rpenny at samba.org
Mon Aug 28 14:29:40 UTC 2017


On Mon, 28 Aug 2017 16:23:34 +0200
Emmanuel Florac <eflorac at intellique.com> wrote:

> Le Mon, 28 Aug 2017 15:12:27 +0100
> Rowland Penny via samba <samba at lists.samba.org> écrivait:
> 
> > On Mon, 28 Aug 2017 15:51:42 +0200
> > "L.P.H. van Belle via samba" <samba at lists.samba.org> wrote:
> > 
> > > Hai, 
> > > 
> > > Thank you for reporting this back. Very welkom and good to heard
> > > you fixed it. 
> > >   
> > > > It would be interesting to know which parameters absolutely 
> > > > kill performance this way!  
> > > 
> > > Yes, that would be great to know which parameters killed the
> > > performance. Do you have exports of the old config and the current
> > > config? You could diff them and then maybe a dev can tell us,
> > > since i've see this question more now. A diff is at least some
> > > extra info. 
> > 
> > My moneys on these two lines:
> > 
> >      winbind enum users  = yes
> >      winbind enum groups = yes
> > 
> > The others are either defaults (so they are still there, just not
> > showing), lines the OP added to try and fix the problem or
> > lines that shouldn't slow anything down.
> > 
> 
> I think I tried without these lines, but not sure. If possible at some
> point I'll try adding back lines one by one until it slows down...
> 

These are your non-default lines:

     winbind sealed pipes = false
     require strong key = false
     winbind sealed pipes:TEST = true
     require strong key:TEST = true

     winbind enum users  = yes
     winbind enum groups = yes
 
     restrict anonymous = 2
     server signing = mandatory
     ntlm auth = yes

Rowland



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