[Spread-users] spread performance testing

[Jayesh Maganlal]

 Hi Ryan and all,

 Need urgent help.

 Referring to your (Ryan's) mail below, i conducted a test on my own with
the
 same scenario that you mentioned, With two spread daemons running on
 different machines (on a 100 Mbit ethernet), a receive-only spflooder on
one
 machine, and a send/receive spflooder on the other, I sent 10000 packets of
 1000 bytes each. The results that i got is no where near what you
mentioned.
 Look at the output below. I don't understand why is it slow. I can do the
 same test using "spsend" and "sprecv" around 1sec. Could it be because of
my
 configuration settings that i have. Below is the configuration that i'm
 using. Please advice. Looking forward for your reply.

 Output:
 ===================================================
 C:\spread-bin-3.17.1\win>java Flooder -m 10000 -b 1024 -wo
 Starting multicast of 10000 messages, 1024 bytes each (self discarding).
 Completed 1000 messages
 Completed 2000 messages
 Completed 3000 messages
 Completed 4000 messages
 Completed 5000 messages
 Completed 6000 messages
 Completed 7000 messages
 Completed 8000 messages
 Completed 9000 messages
 Completed 10000 messages
 Time: 6409ms (12.18 Mbps)   <<<< Time taken to send 6.4 seconds

 C:\spread-bin-3.17.1\win>java Flooder -m 10000 -b 1024
 Starting multicast of 10000 messages, 1024 bytes each.
 Completed 1000 messages
 Completed 2000 messages
 Completed 3000 messages
 Completed 4000 messages
 Completed 5000 messages
 Completed 6000 messages
 Completed 7000 messages
 Completed 8000 messages
 Completed 9000 messages
 Completed 10000 messages
 Time: 7051ms (22.15 Mbps)  <<<< Time taken to send 7.051
 ===================================================

 Spread Config file (comments are not in the config file):
 =====================================
 Spread_Segment  192.168.1.255:4803 {
  Test02 192.168.1.100       <<<<<<<<<<<<<<<<<<--------  receiver machine
  Test04 192.168.1.10         <<<<<<<<<<<<<<<<<---------sender machine
 }


 Thank you.
 Regards,
 Jayesh



> Original Message dated Tue, 25 Feb 2003 23:33:55 -0500 :
> Ryan Caudy mailto:caudy at jhu.edu
> Tue, 25 Feb 2003 23:33:55 -0500
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> --------------------------------------------------------------------------
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> ----
>
> Check the archives for this list; I recall seeing such numbers in the
> past.  However, in order to do some testing of your own, examine the
> spflooder program included with Spread.  The source is in flooder.c
> (which may be under the daemon directory, depending on what you
> downloaded).  You can use this to push a large number of packets of some
> specified size through spread using multiple senders/receivers.  Only
> small modifications to the code should be necessary to add timing and
> other data gathering.  Alternatively, you could write your own very
> simple application to do approximately the same thing... one key thing
> you might consider, if you do so, is making sure the set of
> sending/receiving nodes waits until all other nodes have been started
> and joined some specified group before they begin the experiment.
>
> Just to give you something rough to know if you're on the right track
> with your own testing, I ran a quick test of my own, using spflooder and
> the unix time command.  With two spread daemons running on different
> machines (on a 100 Mbit ethernet), a receive-only spflooder on one
> machine, and a send/receive spflooder on the other, I sent 10000 packets
> of 1000 bytes each in 0.928 seconds.  Running several such tests in an
> automated fashion should give you a decent average, but the result of
> the time command will always be a little higher than simply the
> transmission and receipt time for the messages, since it measures total
> process execution time.  So, I would suggest embedding gettimeofday()
> calls in the code.
>
> If you do generate such results, let us know what you found.  Also, I'd
> be interested to hear what kind of application you're building.
>
> Good luck,
> Ryan Caudy
>
> jayesh wrote:
>
> >hello,
> >
> >i'm currently doing my masters thesis and a part of developing my project
> (a
> >collaborative application) is implementing SPREAD into the application to
> >serve as a multicast communication. My question is has anyone done any
kind
> >of performance / network / bandwidth / packet , testing on spread and a
> >comparison with other network (internal and external networks). If yes
can
> >anyone share those results with me. The reason i need those results is to
> >show prove to my supervisor that spread is better so that i can proceed
in
> >developing my project. If no results are available can anyone please
guide
> >me on how to get one. Thanks.
> >
> >Regards,
> >jayesh
> >
> >
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>