System Administration Commands                          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,
     and  reports how many were received, as well as the transfer
     rate. The host argument 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
     -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  100000
                   bytes.


     -d delay      Specify how many microseconds to pause between
                   sending each packet. The default is 0.


     -l length     The length parameter is the numbers  of  bytes
                   in the Ethernet packet that holds the RPC call
                   message. Since the data is encoded using  XDR,
                   and XDR only deals with 32 bit quantities, not
                   all values of length are possible,  and  spray
                   rounds  up to the nearest possible value. When
                   length is greater than 1514, then the RPC call
                   can  no longer be encapsulated in one Ethernet
                   packet, so the length field no  longer  has  a
                   simple correspondence to 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  net-
                   path.  See rpc(3NSL) for a description of sup-
                   ported classes.





SunOS 5.11           Last change: 6 Nov 2000                    1






System Administration Commands                          spray(1M)



ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWrcmdc                   
    


SEE ALSO
     rpc(3NSL), attributes(5)








































SunOS 5.11           Last change: 6 Nov 2000                    2