I'd really like to see exact numbers too, mainly everything I've seen is
with JSF 1.1:
http://67.84.193.102:8000/articles/BenchMark/
I do know there were lots of bug fixes in 1.2 that removed
synchronization locks and minute performance issues and needless object
creation. The EL language itself is just as fast, if not faster than
the commons-el used in JSP 2.0 (ex. JSP 2.1 Glassfish uses the new EL
and it hasn't shown any performance degradation despite the added
complexity/features).
Serialization is probably the major bottleneck with JSF and client-side
state saving.
Adam Brod wrote:
>
> Hi-
>
> Has anyone done any performance analysis (throughput, memory usage,
> object creation, etc.) of the JSF 1.2 with the new standard Expression
> Language?
>
> I have seen some analysis of JSF 1.1 here:
> http://sandbox.sourcelabs.com/kosta/web_ui_compare/readme/tests/results-graph.html
>
>
> I am not interested in starting a war on this is better than that. I
> am just looking for some external evidence that the new JSF
> implementation with the standard EL has been validated. That would
> help give us a higher comfort level.
> *
> Adam Brod*/
> Product Development Team/