TCPSPRAY(1)						      General Commands Manual						       TCPSPRAY(1)

NAME

       tcpspray - print average throughput for a tcp connection

SYNOPSIS

       tcpspray [ -v ] [ -e ] [ -h ] [ -b blksize ] [ -n nblks ]
	    [ -f filename ] hostname

DESCRIPTION

       tcpspray sends data to either the discard or echo TCP service on the specified host and prints the average throughput.

OPTIONS

       -v	      Prints  a dot for each block sent. Will also print a backspace for each block received in echo mode.  Note: the I/O required
		      for this option will affect the throughput rates.

       -e	      Use the TCP echo service instead of discard (the default) and print throughput rates for both transmission and reception.

       -h	      Print a usage description.

       -b blksize     Sets the size of a block (the internal buffer) in bytes.	Defaults to 1024.

       -n nblks       Sets the number of blocks to transfer.  Defaults to 100.

       -f filename    Copy the contents of the specified file into the internal buffer (sized by -b option).  The buffer is zeroed by default.	If
		      the  file is larger than the buffer, only the first blksize bytes will be used.  If the file is smaller than the buffer, the
		      remaining bytes are zeroed.

		      This option is useful in determining the relationship of the data transferred to throughput.  E.g., if data  compression	is
		      used  on	any  of  the intermediate links comprising the TCP connection, preloading the buffer with a text file will produce
		      greater throughput than with a file that has already been compressed.

       -d delay       Sets the time in microseconds to wait between successive buffer transmissions.  The default is no delay.

SEE ALSO

       ping(8), spray(8)

AUTHOR

       Greg Christy (gmc@quotron.com)

								  23 October 1991						       TCPSPRAY(1)