maximum NTLM_AUTH/Winbind concurrent request

Tharanga Abeyseela (RGA) tharanga.abeyseela at
Thu Dec 16 15:36:52 MST 2010

I was trying to put winbind max clients directive in smb.conf. but testparam doesn’t like it. (3.5.6).
Is there any limitations to WINBINDD_MAX_CLIENTS in include/local.h ? I increased that to 2000. Can it cause any impact on performance ? memory allocation issues etc ?

Tharanga Abeyseela

----Original Message-----
From: Andrew Bartlett [mailto:abartlet at] 
Sent: Friday, 17 December 2010 7:42 AM
To: Tharanga Abeyseela (RGA)
Cc: samba-technical at
Subject: RE: maximum NTLM_AUTH/Winbind concurrent request

On Fri, 2010-12-10 at 08:23 +0000, Tharanga Abeyseela (RGA) wrote:
> Is it avialabkle on 3.5.* version or 3.x versions ?

No. 3.6 only, or else you can change (from memory) the
WINBINDD_MAX_CLIENTS define manually in the source code yourself. 

> is it a directive in smb.conf ?


> winbind max clients=xxxx

But note Volker's warning that it will just help ensure there is a
queue, rather than processing the operations in parallel.  Patches to
make things actually parallel are apparently being developed, which will
make a real difference here once finished.  

Andrew Bartlett

Andrew Bartlett                      
Authentication Developer, Samba Team 
Samba Developer, Cisco Inc.

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