Installation guide

Appendix B The LANMAN.INI File 323
wrkheuristics (MS-DOS only)
This set of digits configures the way an MS-DOS workstation
processes network information. Digits read from left (0) to right (32).
Except as noted, a digit value of 0 means “off” or “inactive,” 1 means
“on” or “active,” and X sets the digit to the default value, allowing
you to set specific digits without knowing the settings of all digits.
Other values are explained in the following descriptions of each digit:
0 Turn on write-through bit on all open files.
The default is 1.
1 Do asynchronous write-buffer and close operations.
The default is 1.
2 Determine whether NetBIOS performs a SEND operation during POST
(power on, self-test).
The default is 1 to allow NetBIOS to SEND during POST.
3 Use buffer-size transfer as follows:
0 = limit transfer to local buffer size 1 = use two read operations for
core read 2 = use “Message Incomplete” error for transfer (system
performance is degraded)
This parameter is used for I/O core servers.
The default is 1.
4 Use buffer mode (assuming that shared access is granted) as follows:
0 = always read bufsize if request is smaller than bufsize 1 = use full
buffer if file is open for read/write 2 = use full buffer if reading/writing
sequentially
The default is 2.
5 Send pop-up message for hard errors.
The default is 1 to send pop-up messages for hard errors.
6 Big buffer read-ahead. If not selected, system performance could be
degraded.
The default is 1 to use big buffer read-ahead.
7 Send process exit SMBs as follows:
0 = don’t send 1 = always send 2 = send based on RPDB structure
The default is 0.
8 Request opportunistic locking of files. This heuristic opens files on the
server that have “deny none” rights, allowing faster buffering. If two
workstations request access to the same file, the server lets the first
workstation flush data before granting access to the second.
0 = do not request opportunistic locking 1 = request opportunistic
locking
The default is 1.