[Samba] extremely low performance on Samba 4.2.14-Debian

L.P.H. van Belle belle at bazuin.nl
Fri Aug 11 12:57:37 UTC 2017

Hai andres, 

No, in this case it was the 4.2.14 (latest) from debian jessie.
Ive not checked 4.5.8 on stretch, i skipped that version. 

Wat is suspect is, the following, based on experiance and things i noticed. 
As far i know this involves Ubuntu 12.x 14.x and debian Wheezy/Jessie (dont know about ubuntu 16.x and 17.x ) 

if bind interfaces is set with : eth0 lo 
Somethings samba fails to start, solution, set ipadres for eth0 ( this is why i always set the ipnumbers) 

Now, add the slow network speed problem to this. 

This smells to me its a wrong startup order, or samba started before all interfaces where up or able to detect nic speed.
But i did not put much effort in the correct solution, change to ip and it works always. 

Debian Stretch, as fas i see now, due to much better boot order of systemd.
So on Stretch, this problem is (probely) not happening, i did not test it. (yet) 



> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Andreas Heinlein via samba
> Verzonden: vrijdag 11 augustus 2017 12:27
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] extremely low performance on Samba 
> 4.2.14-Debian
> Am 11.08.2017 um 10:16 schrieb L.P.H. van Belle via samba:
> > Hai,
> >
> > I got a personal notice of a user, which server was running 4.2.14 
> > (debian jessie), he only got 10-14Mb/s, after upgrading to 
> my 4.6.6 package (now 4.6.7, he is now getting the full 
> gigabit connection speed.
> >
> > Now if you dont want to upgrade you can try set the nic 
> speed in smb.conf.
> > ( man smb.conf )
> > interface[;key1=value1[,key2=value2[...]]]
> >
> >        Known keys are speed, capability, and if_index. 
> Speed is specified in bits per second.
> >
> > And i must say, this should not be needed, but its possible 
> the speed is wrongly detected.
> > I was not able to determin why this was on his server, i 
> had access to console for this one.
> > (its a college of me)
> >
> >
> Hello,
> Just for curiosity, what about version 4.5.8? This is the 
> version included in current Debian stable (stretch).
> bye,
> Andreas
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