[Samba] slowness in samba4 AD

Rowland penny rpenny at samba.org
Wed May 19 15:20:44 UTC 2021


On 19/05/2021 16:11, Marcos Ariel Negrini via samba wrote:
> Hello:
> I have installed a Samba4 AD in version 4.13.07,


Yes but on which OS ?

and what is inyour smb.conf ?

> I have a main controller and two replicas.


No, you have three DC's and one of them holds all the FSMO roles.

> In general the performance is very good(authentication for example), 
> but I started to detect that sometimes some administration 
> operations(Rsat or Group Policy Management) become very slow. For 
> example opening a gpo from the Group Policy Management interface takes 
> more than a minute. I have been following the samba logs, but I can't 
> find any error. Could you guide me on what to look at or configure to 
> solve this?
> As information every night I run a dbcheck in two ways (I am not sure 
> if one includes the other, just in case I leave both), "samba-tool 
> dbcheck --reindex --yes --fix" and "samba-tool dbcheck --yes 
> --cross-ncs --fix".


This sounds like a possible dns problem, are you using the internal dns 
server or Bind9 ?

if bind9, please post your named.conf files.

Rowland






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