[Samba] Samba 2.2.7 and 3.0.0b3 slow transfers with Win2k and WinXP

[Joe Cooper]

Hi all,

I'm thoroughly stumped.  I have a network of Windows 2k and Windows XP 
Professional machines working off of Samba served home directories. 
Everything works.  Sign-ons are relatively quick, no odd errors in the 
samba logs or on the Windows boxes, and all the configuration seems to 
work fine wrt all functions.  Name lookups via nmblookup or nbtstat work 
fine (though it looks like only broadcast lookups are working for the 
Windows machines, even though I have nmb running--I'm probably missing 
something there).

However...The samba shared directories are horribly slow on the Windows 
machines.  They run at about a 1/6th the rate of locally mounted 
directories or NFS mounts from the same server.  Not only that, but a 
Linux box can mount the samba share and access it at about the same 
speed as NFS or a local FS.  In short, everything is fine except all of 
the Windows machines take ages to do anything.  Though there is nothing 
in the logs, the CPU is pretty high (~50% for one client) when copying 
large files, or building software.

Worth noting...I've tried with and without 'socket options'.  And the 
behavior is seemingly identical on both 2.2.7 and 3.0.0b3 versions.

This has been plaguing me for months...Anyone have a clue?

My [global] section:

[global]
         printing = lprng
         encrypt passwords = Yes
         passwd chat = *New*password* %n\n *Retype*new*password* %n\n 
*passwd:*all*authentication*tokens*updated*successfully*
         unix password sync = Yes
         passwd program = /usr/bin/passwd
         workgroup = WORKGROUP
         server string = Samba Server
         socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
         netbios name = SERVER
         log file = /var/log/samba/%m.log
         wins support = true
         dns proxy = no
         security = user
         max log size = 0
         domain master = Yes
         preferred master = Yes
         getwd cache = Yes

-- 
Joe Cooper <joe at swelltech.com>
Web caching appliances and support.
http://www.swelltech.com