spray.1m (2010 09)

s
spray(1M) spray(1M)
NAME
spray - spray packets
SYNOPSIS
/usr/sbin/spray
[-c count ][-d delay ][-l
length ][-t nettype ] host
DESCRIPTION
spray sends a one-way stream of packets to host using RPC, then reports how many were received by
host and what the transfer rate was. The host name can be either a name or an internet address.
spray is not useful as a networking benchmark, as it uses unreliable connectionless transports, UDP, for
example. spray can report a large number of packets dropped when the drops were caused by
spray
sending packets faster than they can be buffered locally, that is, before the packets get to the network
medium.
Options
spray recognizes the following options and command-line arguments:
-c count Specify how many packets to send. The default value of count is the number of
packets required to make the total stream size 100 000 bytes.
-d delay Specify how many microseconds to pause between sending each packet. The default
is 0.
-l length Specify the number of bytes in the Ethernet packet that holds the RPC call mes-
sage. Since the data is encoded using XDR, and XDR only deals with 32 bit quanti-
ties, not all values of length are possible, and spray rounds up to the nearest pos-
sible value. When length is greater than 1514, then the RPC call can no longer be
encapsulated in one Ethernet packet. In that case, the length field no longer has a
simple correspondence to the Ethernet packet size. The default value of length is
86 bytes, the size of the RPC and UDP headers.
-t nettype Specify class of transports. Defaults to netpath. See rpc (3N) for a description of
supported classes.
AUTHOR
spray was developed by Sun Microsystems, Inc.
SEE ALSO
ping(1M), sprayd(1M), rpc(3N).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1