Hello,
I have Samba version 3.0.24 running on a 2.6.14-gentoo-r5 x86 kernel
(xeon 3ghz, 1gb ram raid 5).
All clients accessing samba shares via LAN have no problems. Samba
server works perfectly and fast.
We are instead experiencing serious performance issues when accessing
samba shares from remote clients (WAN), via VPN.
Simple operations like "open a file", "copy & paste a file", "save a
file" from Windows XP SP2 clients are incredibly slow. It may take 10
seconds to open a "save as" dialog box, and maybe 15 more seconds to
save a "hello world" txt file from Notepad.
Other services using the VPN such as SCP, SSH, HTTP, FTP work very good
on the same connection, with no slow issues at all. I tried 2 kinds of
VPN connections (OpenVPN and a router-proprietary VPN
gateway-to-client), and both have the same issue, both only with Samba.
I wonder if there is something I'm missing in client or server
configuration that makes Samba talking very slow when connections are
not coming from the LAN. The file transfer process works fine: once the
"saving file" or "copying file" process has begun, it takes the same
amount of time needed by a SCP or a FTP transfer command using the same
VPN connection. I tried to copy a 2MB file from client to server and the
time needed using SCP and using SAMBA (once the copy process was
started) was the same.
I tried to add some "socket options = TCP_NODELAY SO_SNDBUF=8192
SO_RCVBUF=8192" in smb.conf with no results.
The problem is the same using "explorer", command prompt, or any program
in the client. We currently use all XP SP2 clients.
It looks like the initial and final talking acknowledgement between
client and server for any kind of operation is unacceptably slow, while
the file transfer process seems not to be involved in this problem.
Here is my smb.conf global parameters section:
# Global parameters
[global]
workgroup = MYGROUP
netbios name = MYSERVER
server string = %h server (Samba %v)
encrypt passwords = Yes
obey pam restrictions = Yes
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\sUNIX\spassword:* %n\n
*Retype\snew\sUNIX\spassword:* %n\n .
syslog = 0
log file = /var/log/samba/log.%m
log level = 2
max log size = 1000
invalid users = root
create mask = 0664
directory mask = 0775
[homes]
comment = Home Directories
create mask = 0600
directory mask = 0700
browseable = No
[pdf]
path = /tmp
guest ok = Yes
printable = Yes
print command = /usr/bin/printpdf %s %u
lpq command =
lprm command =
[... shares defitinions omitted..]
Any kind of help will be really appreciated.
Thank you
Gianfranco Pra Floriani
Nexta Media - Italy
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