[netperf-talk] netperf port numbers

[Rick Jones]

On 08/09/2011 09:56 AM, Vishal Ahuja wrote:
> Hi All,
>
> I am supplying netperf with the port numbers of the client and the
> server. *sudo netperf -H 192.168.0.9 -L 192.168.0.8 -t UDP_STREAM -p
> 5001,5001. *But when I view the tcpdump trace, I see different port
> numbers than the ones I have specified. The command I use to view the
> port numbers in the trace: *tshark -r netperfClient.pcap -T fields -e
> udp.srcport -e udp.dstport*.

Vishal

First, you should wait more than just 6 minutes (based on the times I'm 
seeing in my mail client) between sending direct email to me, and then 
asking the very same question to netperf-talk.

Second, for the sake of posterity, a repeat of what I sent in direct email.

To control the port numbers used by the data connection, one should use 
the test-specific -P option.  That is to say, one after the "--" that 
separates global from test-specific options.  So,

netperf -H 192.168.0.9 -L 192.168.0.8 -t UDP_STREAM -- -P 5001

Also, with those options, I believe there is no need to run as root.

raj at tardy:~/netperf2_trunk$ src/netperf -- -h

Usage: netperf [global options] -- [test options]

OMNI and Migrated BSD Sockets Test Options:
     -b number         Send number requests at start of _RR tests
     -c                Explicitly declare this a connection test such as
                       TCP_CRR or TCP_CC
     -C                Set TCP_CORK when available
     -d direction      Explicitly set test direction based on bitwise OR
                       of 0x2 for transmit and 0x4 for receive. Default:
                       based on test type
     -D [L][,R]        Set TCP_NODELAY locally and/or remotely (TCP_*)
     -h                Display this text
     -H name[/mask],fam  Use name (or IP) and family as target of data 
connection
                       A mask value will cause randomization of the IP used
     -k [file]         Generate keyval output optionally based on file
                       Use filename of '?' to get the list of choices
     -L name[/mask],fam  Use name (or IP) and family as source of data 
connection
                       A mask value will cause randomization of the IP used
     -m bytes          Set the send size (TCP_STREAM, UDP_STREAM)
     -M bytes          Set the recv size (TCP_STREAM, UDP_STREAM)
     -n                Use the connected socket for UDP locally
     -N                Use the connected socket for UDP remotely
     -o [file]         Generate CSV output optionally based on file
                       Use filename of '?' to get the list of choices
     -O [file]         Generate classic-style output based on file
                       Use filename of '?' to get the list of choices
     -p min[,max]      Set the min/max port numbers for TCP_CRR, TCP_TRR
     -P local[,remote] Set the local/remote port for the data socket
     -r req,[rsp]      Set request/response sizes (TCP_RR, UDP_RR)
     -R 0/1            Allow routing of traffic on data connection.
                       Default: 0 (off) for UDP_STREAM, 1 (on) otherwise
     -s send[,recv]    Set local socket send/recv buffer sizes
     -S send[,recv]    Set remote socket send/recv buffer sizes
     -t type           Explicitly set socket type. Default is implicit
                       based on other settings
     -T protocol       Explicitly set data connection protocol. Default is
                       implicit based on other settings
     -u uuid           Use the supplied string as the UUID for this test.
     -4                Use AF_INET (eg IPv4) on both ends of the data conn
     -6                Use AF_INET6 (eg IPv6) on both ends of the data conn

For those options taking two parms, at least one must be specified;
specifying one value without a comma will set both parms to that
value, specifying a value with a leading comma will set just the second
parm, a value with a trailing comma will set just the first. To set
each parm to unique values, specify both and separate them with a
comma.

happy benchmarking,

rick jones