Q-Logic 3100 User Manual
7–Windows Server 2003, 2008, and 2008 R2 Driver Configuration
Windows Server 2003 Performance
Windows Server 2003 Performance
7-16
NE0154601-00 C
Tcp1323Opts Parameter
This parameter determines whether TCP uses the time-stamping and window
scaling features described in RFC 1323, TCP Extensions for High Performance.
scaling features described in RFC 1323, TCP Extensions for High Performance.
For more efficient use of high bandwidth networks, use a larger TCP window size.
The TCP window size field controls the flow of data and is limited to 2 bytes, or a
window size of 65,535 bytes.
The TCP window size field controls the flow of data and is limited to 2 bytes, or a
window size of 65,535 bytes.
Since the size field cannot be expanded, a scaling factor is used. The TCP
window option increases the maximum window size from 65,535 bytes to
1 gigabyte. The TCP receive window is the amount of data the sending host can
send on a connection at one time.
window option increases the maximum window size from 65,535 bytes to
1 gigabyte. The TCP receive window is the amount of data the sending host can
send on a connection at one time.
When the value for window size is added to the registry and its size is larger than
the default value, Windows attempts to use a scale value that accommodates the
new window size.
the default value, Windows attempts to use a scale value that accommodates the
new window size.
and
show the four Tcp1323Opts settings.
-fr
—
Full buffers posted on read opera-
tions.
tions.
-mb
—
Multiple buffer post mode
-m <mapping>
—
mapping is a session or sessions,
processor, receiver, and IP set. The
following example sets up four ses-
sions on processor 0 to test a net-
work on 1.2.3.4:
following example sets up four ses-
sions on processor 0 to test a net-
work on 1.2.3.4:
-m 4,0,1.2.3.4
NOTE:
This parameter is only for Windows Server 2003.
Table 7-3. Tcp1323Opts
Data Type
Range
a
a
See
Value
REG_DWORD
0 | 1 | 2 | 3
1
Table 7-2. ntttcps and ntttcpr Command Line Options (Continued)
Command
Default
Notes