[Samba] poor read/write performance due to TCP window size configuration

[Low Tee Chong]

Hi,

I am using a TCP link that requires TCP window size to be at least 256K.

Below is my smb.conf file.
I have tried to capture the packets using wireshark after the configuration.  However, the TCP windows size still cap at about 64k

How should I configure it?  My samba version is Version 3.0.24-11.fc6

Thank You.

Best Regards,
Gary

[global]
   workgroup = TESTBED
   server string = Samba Server
   security = user
   log level = 0
   read raw = yes
   write raw = yes
   kernel oplocks = yes
   max xmit = 262144
   dead time = 15
   getwd cache = yes
   encrypt passwords = yes
   log file = /var/log/samba/%m.log
   max log size = 50
   smb passwd file = /etc/samba/smbpasswd
   netbios name = stgsvr01
   disable spoolss = yes
   show add printer wizard = no
   cups options = raw
   socket options = TCP_NODELAY SO_RCVBUF=262144 SO_SNDBUF=262144 IPTOS_LOWDELAY

#============================ Share Definitions ==============
[teststg01]
   path = /mnt/thumb
   hosts allow = 192.168.37.199
   delete readonly = yes
   oplocks = yes
   read only = no
   browseable = yes
   valid users = teststg01

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