[Samba] Samba performance

Juan Pablo jhurcad at yahoo.com
Fri May 27 07:34:50 MDT 2011

Hi Volker,

I am using the following socket options:


I've been testing with lower rcvbuf and sndbuf values but this seems to be the 
best. Any advice on how to calculate this value besides trial and error?

Following is my smb.conf:

        workgroup = Workgrouplasp
        encrypt passwords = yes
        security = user
        smb passwd file = /etc/samba/smbpasswd
        netbios name = LASPFS
        server string = LASP Linux File Server
        dns proxy = no
        log level = 1
        oplocks = yes
        level2 oplocks = yes    
        socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 
        guest account = samba
        map to guest = Bad User
        map to guest = Bad Password
        read raw = yes
        write raw = yes
        max xmit = 65535
        dead time = 15
        getwd cache = yes
        interfaces =
        bind interfaces only = yes
        socket address =
        max protocol = SMB2

        comment = Public File Storage
        browseable = yes
        force user = samba
        force group = samba
        path = /srv/samba/filestore/laspfiles
        read only = no
        guest ok = yes

My focus was to tune the fileserver for several 8MB file transfer. Any idea on 
how to improve this?

Thanks for your help!

Juan Pablo

From: Volker Lendecke <Volker.Lendecke at SerNet.DE>
To: Juan Pablo <jhurcad at yahoo.com>
Cc: Jeremy Allison <jra at samba.org>; samba at lists.samba.org
Sent: Thu, May 26, 2011 2:27:20 PM
Subject: Re: [Samba] Samba performance

On Thu, May 26, 2011 at 10:14:31AM -0700, Juan Pablo wrote:
> Hi Jeremy,
> Thanks for your reply!
> The tests we did with the Windows 7 terminals was using smb2. 
> When we enabled smb2 in samba we saw in samba logs that it
> was not being  used.  We modified Windows 7 registry as
> described in
> to enable smb2 to start using smb2. Once this was done
> smb2 was  negotiated but there was no speed difference.
> The OS read test is done iterating from 0 to 999 a dd
> if=testFile-xxx  of=/dev/null bs=1k. The samba local
> access test is done with smbclient  from the same machine
> sending the output to /dev/null. Is the speed decrease
> (from 158 MB/s to 71 MB/s) from what I get when I test
> from  the OS to what I get with samba normal? 

With smbclient you should get near wire speed. Do you have
"socket options" set in your smb.conf?


SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen

More information about the samba mailing list