Very good stuff! Question, how can we proceed in
testing a clustered setup along similar lines as you
have done here? I am curious to see how effective
scaling a given application is. From a single node, to
two nodes, to three nodes, then on to a second
partition and so forth. It would be extremely helpfull
if the JBoss site posted some information regarding
use of JBoss in a true enterprise situation, where
clustering, scaling and so forth is examined in
detail. I think that would go a long way to credit
JBoss as being enterprise worthy, even though it
already is well on its way to that credibality.

A fellow JBoss enthusiast and I are looking at
developing a simple J2EE application and some testing
procedures to test as I have described above. It is
more of a generic J2EE app that should allow testing
of clustering in any J2EE app server, but in general
we are targeting JBoss.

My initial test idea was testing single client to one
ejb bean (stateless) 1000's of requests, measuring the
length between request/response, maybe measuring
timing on the server side, and so forth. There would
be a client swing app that runs these tests, grabs the
data, etc. On the J2EE app, it would send data back in
some form to offer at least the measurement of tasks.
This wouldn't easily translate into any other
applications performance, but it might give the
industry using Jboss some sort of idea how well it can
cluster, scale, etc. What do you think? Have you
already done this?


--- Jon Barnett <[EMAIL PROTECTED]> wrote:
> As some people have asked about more complex loads,
> we provide an example
> that first lead us to investigate the issue of
> performance.  With a
> multi-CPU system at our disposal, we should be able
> to generate a lookup
> load and a remote invocation load using multiple
> threads and measure
> throughput.  Unfortunately, as threads increased so
> did the thread task
> durations.  We finally returned to this and document
> it here. We hope it
> will satisfy those who wish to know. The lookup and
> the invocation
> response characteristics confirm our initial test
> findings where object
> creation was included in load operation.
> 
>
http://www.amitysolutions.com.au/documents/Threads-technote.pdf
> 
> Again, we stress that this is not indicative of any
> operation in a
> production environment. We are also testing raw
> parallel throughput,
> without any explicit synchronisation effects so this
> needs to be taken
> into consideration as well.
> 
> Regards,
> 
> JonB
> 

> ATTACHMENT part 2 application/x-pkcs7-signature
name=smime.p7s



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