Q-Logic 3000 User Manual

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7–Windows Server 2003, 2008, and 2008 R2 Driver Configuration
Windows Server 2003 Performance
7-14
NE0154601-00  B
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.  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.  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.