Installation guide

Appendix B The LANMAN.INI File 327
7 Read-ahead to sector boundary.
Reading ahead to a sector boundary creates better performance in a file
system that is not sensitive to the location of information or the reading
of partial sectors on a disk or one that has an active cache.
The default is 1.
8 Use the “chain send” NetBIOS NCB as follows:
0 = never 1 = only if the server’s buffer is larger than the workstation
buffer 2 = always (to avoid copy)
The default is 2.
A chained send enables sending data directly from the user’s buffer to
the transport driver (bypassing data copy). The design of the transport
driver determines which setting is optimum.
9 Buffer small read/write requests (reading and writing a full buffer) as
follows:
0 = never 1 = always 2 = only on a LAN Manager VC
The default is 1.
10 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 3 = buffer all requests that are smaller than bufsize
The default is 3.
11 Use raw data transfer (RAW) read/write server message block (SMB)
protocols.
The default is 1.
12 Use large RAW read-ahead buffer.
The default is 1.
13 Use large RAW write-behind buffer.
The default is 1.
14 Use read multiplex (MPX) SMB protocols.
The default is 1.
15 Use write multiplex (MPX) SMB protocols.
The default is 1.
16 Use big buffer for large core reads.
The default is 1.
17 Set the read-ahead size as follows:
0 = read to sector boundary 1 = use a multiple of the size that the user
is reading
For example, if the user is reading 50-byte pieces of a 4096-byte
buffer, LAN Manager reads ahead to fill the buffer to 4050 bytes.
The default is 1.