--- On Sat, 2/14/09, Ian Pascoe <softy.lofty....@btinternet.com> wrote:
> Hi Nicholas
>
> Not being a Java coder, and not even sure if this is
> possible, but as
> discussions seem to revolve around screen refreshes and the
> like, can the
> Java app produce any type of log that would give a definate
> measure that can
> be compared in various testing scenarios as opposed to the
> "it definately
> seems slower / faster" perception? This of course
> presumes that the app
> waits to refresh the screen until after it is drawn on the
> remote user.
>
> Ian
That's exactly what my brother and I are trying to do. We're trying to come up
with a test program, or programs, that quantitatively show the dramatic
difference between the performance when the application is run on an LTSP
terminal vs when run on the same machine as a full Linux workstation, running
the same application on the LTSP server via ssh -X.
We're making some progress, but it's proving to be pretty interesting. We're
not so sure it's a graphics problem. It looks like it may be a networking
issue. I'll explain more about that later.
One thing that would be helpful would be if people would post in a reasonable
amount of detail what applications, and especially with in-house applications,
what *type* of applications they are experiencing difficulties with. What
exactly are you all having problems with?
Not all Java applications have these performance issues; and these problems are
not limited just to Java applications.
Our working theory is that once we have a test program, or programs, then we
can give them to the LTSP developers. We can run wireshark on them, and work
together to find out exactly what's going on, and hopefully fix it.
Sound reasonable?
So, if some of you who are having problems can give us some more detailed
information on exactly what you are having problems with, that would be very
helpful, and appreciated!
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