samba - Nov 2013 - SAMBA running sluggish for Windows XP clients

Hello,

I'm running into issues with SAMBA 3 running slow for users on Windows XP
connecting to our RHEL 6.3 SAMBA server. The RHEL clients seem to have no issues
at all with speed while connecting to the RHEL server.
Our old SAMBA 2 server was running on Solaris 10 and the Windows XP clients did
not have this kind of slowdown.
>From looking around there doesn't seem to be many options for fine
tuning.
TCP_NODELAY is configured by default now so I added IPTOS_LOWDELAY and
SO_KEEPALIVE. I've verified that my loglevel is set to 1 since 2 seems to
cause a performance hit.

It shouldn't be a hardware issue since our switches are GB ports and there
is only about 10-20 client connections at a time.
The server itself is a Dell R420 with two 3.2GHz CPUs and 16GB of RAM.
The SAMBA shares are located on a Dell SAN that is connected using iSCSI to the
RHEL server.
The file system that is being used is GFS2 and it is in a clustered (two nodes)
environment.
Like I stated above our Windows XP clients had no issues at all connection to
our Solaris 10 SAMBA server which was using the same switches and the same Dell
SAN.

Is there anything you guys can suggest I look at on both the RHEL server and the
Windows XP clients? I'm not too familiar with the fine tuning aspect of
SAMBA so I apologize for the lack of information.

Thanks,

Matt

Hey,

I've changed the "min receivefile size" from 0 to 16384 and it has
increased performance.
After doing some research on it though I can't really find an optimal
setting for it. Any suggestions for what I could put in there?

Thanks,

Matt

-----Original Message-----
From: samba-bounces at lists.samba.org [mailto:samba-bounces at lists.samba.org]
On Behalf Of Joseph, Matthew (EXP)
Sent: Wednesday, November 06, 2013 7:41 AM
To: samba at lists.samba.org
Subject: EXTERNAL: [Samba] SAMBA running sluggish for Windows XP clients

Hello,

I'm running into issues with SAMBA 3 running slow for users on Windows XP
connecting to our RHEL 6.3 SAMBA server. The RHEL clients seem to have no issues
at all with speed while connecting to the RHEL server.
Our old SAMBA 2 server was running on Solaris 10 and the Windows XP clients did
not have this kind of slowdown.
>From looking around there doesn't seem to be many options for fine
tuning.
TCP_NODELAY is configured by default now so I added IPTOS_LOWDELAY and
SO_KEEPALIVE. I've verified that my loglevel is set to 1 since 2 seems to
cause a performance hit.

It shouldn't be a hardware issue since our switches are GB ports and there
is only about 10-20 client connections at a time.
The server itself is a Dell R420 with two 3.2GHz CPUs and 16GB of RAM.
The SAMBA shares are located on a Dell SAN that is connected using iSCSI to the
RHEL server.
The file system that is being used is GFS2 and it is in a clustered (two nodes)
environment.
Like I stated above our Windows XP clients had no issues at all connection to
our Solaris 10 SAMBA server which was using the same switches and the same Dell
SAN.

Is there anything you guys can suggest I look at on both the RHEL server and the
Windows XP clients? I'm not too familiar with the fine tuning aspect of
SAMBA so I apologize for the lack of information.

Thanks,

Matt


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