[Samba] Speed differences for windows clients

[Jeremy Allison]

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 :-).

Jeremy.