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7–Windows Server 2003, 2008, and 2008 R2 Driver Configuration
Windows Server 2003 Performance
7-14 NE0154601-00 C
3. Run ntttcp.
a. Click the Start button, and then click Run. The Run dialog box opens.
b. Type cmd in the Open: box, and then click OK (Figure 7-6).
Figure 7-6. Run Dialog Box
c. Change the directory path to the location where ntttcp was
downloaded or copied. An example directory tree is shown in
Figure 7-7.
Figure 7-7. Location of ntttcp
For scripts, see the tools package included with the release.
ntttcp Overview
There are two switches on ntttcp that boost performance: -a and -rb.
ntttcp can be run without an optimal value for the -a switch and without the
-rb switch for the QLE3044.
When running ntttcp with the QLE3142, and in particular with fewer threads on
Windows Server, performance is limited by the receive window and by the
outstanding I/O (-a) value, regardless of hardware limitations.