[Samba] High CPU Load samba 4.1.12 possibly because of Notify Request problem

[Jan Koop]

Hi Jeremy,

thanks for the reply.
I filed a bug (#10839) https://bugzilla.samba.org/show_bug.cgi?id=10839 .
One thing I forgot to state is that apparently this behavior occurs as soon as our users start AutoCAD 2011, don't know if this is relevant.
Cheers,
Jan



-----Ursprüngliche Nachricht-----
Von: Jeremy Allison [mailto:jra at samba.org] 
Gesendet: Mittwoch, 24. September 2014 21:44
An: Jan Koop
Cc: samba at lists.samba.org
Betreff: Re: [Samba] High CPU Load samba 4.1.12 possibly because of Notify Request problem

On Wed, Sep 24, 2014 at 04:27:42PM +0200, Jan Koop wrote:
> Hi List,
> 
> I recently upgraded one of our high-volume SMB servers from samba 3.x to samba 4.1.12 (also changing the OS).
> 
> Now I have a strange problem.
> 
> The CPU load on the server is very high, processes that are causing it are nslcd or since I changed to it sssd and the smbd processes themselves.

This is the root of the problem:

[2014/09/24 16:15:04.433393,  2, pid=2495, effective(547, 500), real(547, 0)] ../source3/smbd/smb2_server.c:1784(smbd_smb2_request_v
+erify_creditcharge)  CreditCharge too low, given 1, needed 2

Can you log a bug with the samba bugzilla and also upload a wireshark trace of these packets ?

We'll need that to investigate & fix.

Thanks !

Jeremy.