7–Windows Server 2003, 2008, and 2008 R2 Driver Configuration Windows Server 2003 Performance

For the receive side, the optimal value is 16 for -aand 512,000 for -rb(or something similar). With these values, a single thread should perform closer to a multi-thread configuration. From a DOS command prompt, type the following command. Note that the command must be executed from the same directory in which the executable files are located.

ntttcpr -m 16,0,<rcv ipaddr> -n <# of tcp segs for snd/rcv> -a 16

For the transmit side, -ashould be a value less than eight. The more threads, the lower the value.

NOTE:

The send (transmit) and receive side ntttcp commands must use the receive side’s IP address.

ntttcps and ntttcpr Command Line Options

The ntttcps and ntttcpr command line options are listed in Table 7-2.

Table 7-2. ntttcps and ntttcpr Command Line Options

Command

Default

Notes

 

 

 

-l <length of buffer>

64K

—

-n <number of buffers>

20K

—

 

 

 

-p <port base>

5001

—

-a <outstanding I/O>

2

—

 

 

 

-x <packet array size>

1

—

-rb <receive buffer size>

64K

—

 

 

 

-sb <send buffer size>

0

—

-i

—

Infinite loop

 

 

 

-f <file name>

output.txt

—

-u

—

UDP send/receive

 

 

 

-w

—

—

-d

—

Verify flag

 

 

 

-t <runtime>

—

Runtime is in seconds.

-v

—

Enable verbose mode.

 

 

 

-6

—

Enable IPv6 mode.

 

 

 

NE0154601-00 C

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Q-Logic 3000, 3100 manual Ntttcps and ntttcpr Command Line Options, Command Default
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3000, 3100 specifications

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