[Samba] Samba 4 slower ?

[Jeremy Allison]

On Wed, Dec 23, 2015 at 12:57:02PM +0530, nagendra ps wrote:
> Hi All,
> 
> I have samba 3.6 and samba 4.2 running on 2 different freebsd machines.
> Both are virtual machines and have 1GB Ethernet and exact same configurations.
> Samba is joined to a 2K8 server(security = ADS).
> Both use a minimal similar smb.conf.
> 
> Am using smbtorture bench.nbench from another freebsd machine.
> 
> Samba 3.6 Throughput is at: 12.6165 MB/sec
> Samba 4.2 Throughput is at:  1.5359 MB/sec
> 
> 4.2 appears almost 10X slower. What could be going wrong for me ?

Not sure. Most people get line-speed out of Samba 4.x (as
they also did out of Samba 3.x).

> Is there an official bench-marking of Samba 3 and Samba 4, which I
> could refer to ?
> 
> btw.. netbench seems to be going over SMB1 . Is there a benchmarking
> tool which uses SMB2/SMB3 ?

nbench didn't get updated for smb2. Should be possible.
Not a high priority for the Team - but if you want to
patch it I'm happy to review !