[Samba] Samba 4.7.1 - ldap multi process - excessive processes

[Garming Sam]

Hi,

It's a known issue, where the extent of memory accumulation for 
processes wasn't understood (large chunks of memory, which tend to fail 
to be shared) until just after the release froze. There are patches 
upstream to implement a prefork process model (with a fixed number of 
waiting processes) and should be available in 4.8. In saying that, some 
considerations could be made for backporting. One alternative is that it 
might be possible for you to use single process mode (-M single) for now.

The prefork process model should apply similarly to the RPC server.

Cheers,

Garming


On 08/11/17 23:16, Thomas Rosenstein via samba wrote:
> Hi,
>
> with the change in Samba 4.7 that ldap is now running multiple 
> processes I'm having resource constraint issues.
>
> Before it was fine to run any number of clients against samba, but now 
> the ldap clients are limited.
>
> My server quickly ran out of memory!
>
> 1) Is there any solution exept adding more RAM?
> 2) One process should be able to handle more than 1 connection! This 
> is an archaic server side model ....
>
> Actually the same issue also happens with the RPC Server which under 
> certain conditions was started up to 50 000 times on 4.5 (not sure 
> that is fixed).
>
> BR
> Thomas
>