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

[Andrew/]

I experienced similar problems with Samba 3.6.6 running on a Raspberry
Pi but, being new to both Linux and Samba did not know what diags to
produce nor how. Bug 10530.

I overclocked the Pi to 900Mhz and the problems seem to have reduced.

>From observations, the orphaned processes seem to occur when Samba
cannot keep up with the requests being thrown at it.

Andrew

On Thu, 2014-09-25 at 13:05 +0200, Jan Koop wrote:

> 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.
>