Performance comparison

Andrew Haley aph@cambridge.redhat.com
Mon Jul 29 08:02:00 GMT 2002


Jeff Sturm writes:
 > On Mon, 29 Jul 2002, Norman Hendrich wrote:
 > > after I got my simulation framework to compile and run under gcj
 > > (in non-GUI mode), you might be interested in the first results.
 > 
 > Thanks.  What version of gcj did you try?
 > 
 > > I suspect that gcj is possibly just missing to inline one or two
 > > critical functions. Overall performance is quite good. The
 > > interpreter works fine but has some headroom for improvements :-)
 > 
 > When I benchmark "real" applications I often find the results are
 > dominated by object allocation/collection times.  I haven't seen any
 > convincing improvement from inlining (perhaps because the RTL inliner
 > never really worked that well anyway).

I'm sure that's the main reason.  Once we get global inlining working
I expect to see a decent improvement.

Andrew.



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