RE: [JBoss-user] JBossMQ Perforamance

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I don't exactly know what is happening under the cover in this case. What I
am saying is that if you have a single connection that does this:
 1) take a message
 2) send it
 3) when sent, start again to point 1)

Then, independently of the bandwith, you will have a latency limit that
cannot be changed, event by using a 1Tb/s link. As an analogy, imagine that
what you are trying to achieve is to deliver postal letters to your central
office and that:
 - you have only one guy that can run between the local site and the
destination (i.e. one connection)
 - this guy only deliver one message at a time
 - it takes 1 hour to go to the destination and come back (i.e. latency)

No matter if the car is huge or if the highway is very wide: you will only
be able to transport 24 letters per day (if the guy never sleeps).

To go over this number, you need to use other scheme such as streaming the
messages without waiting for an ACK, etc.

Hiram is your guy anyway ;)

Cheers,

			Sacha

> -----Message d'origine-----
> De : jbo...@li...
> [mailto:jbo...@li...]De la part de Luttrell,
> Peter
> Envoyé : jeudi, 24 octobre 2002 17:00
> À : 'jbo...@li...'
> Objet : RE: [JBoss-user] JBossMQ Perforamance
>
>
> Is there a way to reduce latency between 2 boxes connected with a 4 foot
> crossover cable? Seams to me that this should provide the highest
> throughput
> possible....
>
> So are you basically saying that ~1500 messages per second is the fastest
> that jbossmq can do?
>
> Did you see my message about hanging on to the connection which
> can lead to
> >22,000 messages per second?
>
> .peter
>
> -----Original Message-----
> From: Sacha Labourey [mailto:Sac...@ml...]
> Sent: Thursday, October 24, 2002 2:18 AM
> To: jbo...@li...
> Subject: RE: [JBoss-user] JBossMQ Perforamance
>
>
> And if your issue was simply because of network latency (if my memory
> serves, latency is the same on both type of networks)?
>
> ~1500 messages/sec => 1 message each 0.5/1ms. What is your actual network
> latency?
>
> Cheers,
>
>
> 			Sacha
>
> > -----Message d'origine-----
> > De : jbo...@li...
> > [mailto:jbo...@li...]De la part de Peter
> > Luttrell
> > Envoye : mardi, 22 octobre 2002 07:41
> > A : jbo...@li...
> > Objet : [JBoss-user] JBossMQ Perforamance
> >
> >
> > In order to ascertain if JBossMQ is capable of providing the throughput
> > I need, i've constructed a couple of little apps to see what kind of
> > performance i can get. Here's what i've found:
> >
> > 100 Megabit:	1250-1350 messages per second
> > Gigabit: 		1500-1600 messages per second
> >
> > I was hoping to see a bit better performance then this; especially a
> > larger differential with Gigabit. 100Megabit only used about 10% of the
> > network bandwidth (if you believe xp's network monitor) and gigabit
> > only used at most 1.5%.
> >
> > Is this the best performance i can expect?
> > What have others observed?
> >
> > Can anyone suggest where the bottleneck might be?
> > Does anyone have any suggestions on what configs to tweak?
> >
> > All of my test code, and deployable ear is located at
> > http://www.sharpuniverse.com/jboss/jms-performance
> > There is a publisher and subscriber swingapps which are webstart
> > deployed. There is also a publisher servlet. Deploy the ear and go to
> > context: jms-performance-test for everything
> >
> > Here's a little more info on my tests:
> > JBoss3.0.3
> > Protocal/ConnecitonFactory: OIL
> > 100MegaBit tests:
> > 	Network: several different networks all switched
> > 	Server/Client boxes: Various differnt boxes runing w2k,
> > wxp, osx and
> > linux, various different jdks 1.4.0 - 1.4.1_01
> > Gigabit tests:
> > 	Network: 2 boxes with crossover cable
> > 	Server: MacOSX running jdk1.3.1
> > 	Client: WindowsXP running jdk1.4.1_01
> >
> > .peter
> >
> >
> >
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