[Samba] Speed differences for windows clients

L.P.H. van Belle belle at bazuin.nl
Tue Aug 13 02:50:07 MDT 2013

Try the following. 
Since Win7 does traffic shaping. 

in adminstrative dos box. 
netsh interface tcp set global autotuning=disabled 

( the original setting is : netsh interface tcp set global autotuningl=normal  ) 
and test again. 



>-----Oorspronkelijk bericht-----
>Van: jra at samba.org [mailto:samba-bounces at lists.samba.org] 
>Namens Jeremy Allison
>Verzonden: dinsdag 13 augustus 2013 2:18
>Aan: Philipp Lies
>CC: samba at lists.samba.org
>Onderwerp: Re: [Samba] Speed differences for windows clients
>On Mon, Aug 12, 2013 at 10:00:18AM +0200, Philipp Lies wrote:
>> Hi,
>> we have a strange phenomenon with the transfer speed between windows
>> clients and samba servers. Here's the setup:
>> server 1: centos 6.3 with samba 3.5.10
>> server 2: centos 6.4 with samba 3.6.9
>> both servers are configured as BDC and have - aside from netbios
>> name - identical smb.conf which contains ldapsam as backend and all
>> other parameters are not set (i.e. default)
>> When I mount a share from a linux client, the transfer speed is
>> ~112MB/sec to either server from any linux client. However, when I
>> mount a share from Windows clients, the speed to server 1 is ~95MB/s
>> and to server 2 ~85MB/s. We tested this with several windows clients
>> (all running Windows 7 with all updates).
>> The speed difference between linux client and windows client is not
>> what's confusing me but that server 2 is always slower than server
>> 1.
>> Any ideas what could cause this?
>Nope. Need more data :-).
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