1c (accounting application) and samba 3.0.24: huge perfs problems

[Jeremy Allison]

On Fri, Dec 05, 2008 at 12:22:00AM +0300, Matthieu Patou wrote:
> Hello all,
>
> We are running a samba 3.0.24 in production which hold files for 1c (a  
> russian accounting application), globaly the perfs are good but in some  
> kind of report not very big we have very huge slow down.
>
> I made a trace and I see something  70% of"Locking andX request/reponse"  
> request and roughly the same in term of volume.
>
> We can see that the application if reading a kind of 2/3 berkley db  
> files but just a few bytes at a time and at random places.
>
> I am wondering if it is the application that is badly designed and there  
> is nothing to do, or if with some parameters I could tweak samba so that  
> result can be better.

Is this an appication accessed by one client ? Oplocks would help
here if so (allowing the client to check locks locally and not
have to go over the network).

Jeremy.