samba - Jul 1997 - socket options

Do the socket options still work with versions of samba above 1.9.16p10?  I
get error messages both on the command line and in the smb.log file that say:

Unknown socket option IPTOS_LOWDELAY
Unknown socket option TCP_NODELAY

Here is my smb.conf Global parameter entry:
socket options = IPTOS_LOWDELAY TCP_NODELAY

Do these have to be compiled into the Samba program?

If these are outdated parameters do you have any others that will replace
these?  

We are trying to compare the Intergraph NT NFS package with Samba, and so
far samba is at least 30% slower than Intergraph.  Do you have any
recommendations for improving performance on Samba using the latest versions?

Thanks in advance for any help you can give on this. 
========================================Samuel C. Martinez, Computer Specialist
U.S. Geological Survey, Water Resources Division
Branch of Technical Development and Quality Systems    
========================================P.O. Box 25046, MS 401
Denver, CO 80225
E-mail:  scmartin@usgs.gov
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Phone:  (303) 236-1870 x304 
Fax: (303) 236-1880
=========================================

peloy@ven.ra.rockwell.com wrote :
> 2) Add this to you [global] section:
>
> socket options = IPTOS_LOWDELAY TCP_NODELAY 
What is suppose to do this option?

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    Michel  APPLAINCOURT     | E-mail : michel.applaincourt@umh.ac.be
 Computer Sciences Assistant | Phone  : 32 65 373498 
 Universite de Mons-Hainaut  | Fax    : 32 65 373318
                         
                          [Sad...But True]
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I'm looking for a little advice concerning 'socket options'.

What I'm looking for is descriptions/explanations of the various options
that I can set. I have a list of the options I can set, but no descriptions.
I've looked in the man pages and in a Samba book that I have. (Maybe I just
wasn't looking in the right place.)

I'd like to at least have an inkling of what these options do before I start
tinkering with my configuration. 

Thanks,
Daniel Hardy
metaSENSORS, Inc.
358 Hungerford Drive
Rockville, Maryland 20850
Phone: (301) 762-3078 ext. 35
Fax: (301) 340-0769
Email: danh@metasensors.com