I haven't played around with this much but I seem to recall reading that things in packet/window size seem to work on a lowest common denominator approach. Does something in the path not have the window scale option enabled? The "old" standard had a max size for the window of 64k. According to: http://en.wikipedia.org/wiki/TCP_window_scale_option

routers and firewalls are notorious for not implementing TCP Window scaling.
On Jan 5, 2009, at 10:44 AM, Low Tee Chong wrote:

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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