perfsonar development work

[Jochen Reinwand <>]

On Wednesday 30 January 2008 10:12, Szymon Trocha wrote:
> Maciej Glowiak wrote:
> > I think it would be better to switch to 1.6 because of performance
> > reasons and some advanced features, however I will wait for the decision
> > of others.
>
> I think there are two points of view: developers (who would probably
> support this change e.g. because of better performance) and users (who
> like Joe or Johen would like not to change the version because of
> maturity issues). We should consider possible impact on both parties as
> well as development and release process.

Ok, my Java knowledge is a little bit out-dated, but afaik you should really 
think about the difference of source code and bytecode! Especially if you are 
thinking about the different points of view of developer and user.
Isn't 1.6 creating bytecode that won't run on 1.5? Is the performance gain in 
1.6 related to bytecode compiler or runtime environment? Perhaps it makes 
sense to compile the code using 1.5 compiler and then run it on 1.6 runtime 
to have the better performance or on 1.5 for compatibility with "older" 
systems? If you write 1.6 source code you will most likely not be able to run 
the software on older systems. Does this really make sense?
Sorry, if these concerns are totally out of interest for newer Java versions. 
If so, just ignore me ;)

Jochen

-- 
Jochen Reinwand, DFN-Labor
Friedrich-Alexander-Universität Erlangen-Nürnberg
Regionales RechenZentrum Erlangen (RRZE)
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